Primes: n*2^m+1: Difference between revisions

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Add PARI/GP implementation

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Line 1: {{~~draft~~ task}} ;Task * Find and display the first 45 ('''n''') primes of the form '''n × 2<sup>m</sup> + 1''' where '''m''' is the smallest valid non-negative integer. Line 571: n: 44 m: 1 p: 89 n: 45 m: 2 p: 181</pre> =={{header\|EasyLang}}== {{trans\|FreeBASIC}} <syntaxhighlight lang=easylang> func isprim num . i = 2 while i <= sqrt num if num mod i = 0 return 0 . i += 1 . return 1 . for n = 1 to 45 m = 0 repeat p = n * (pow 2 m) + 1 until isprim p = 1 m += 1 . print n & " " & m & " " & p . </syntaxhighlight> =={{header\|FreeBASIC}}== Line 1,656 ⟶ 1,681: 399 2 1597 400 0 401 </pre> =={{header\|PARI/GP}}== {{trans\|Julia}} <syntaxhighlight lang="PARI/GP"> /* Check if there is an m such that n * 2^m + 1 is prime / n2m1(n) = { for(m = 0, 10^300, if(isprime(n 2^m + 1), return([1, m])); ); return([0, 0]); } { print(" N M Prime\n------------------"); for(n = 1, 400, result = n2m1(n); if(result[1], print(Str(n) " " Str(result[2]) " " n * 2^result[2] + 1); ); ); } </syntaxhighlight> {{out}} <pre style="height:12ex;overflow:scroll;"> N M Prime ------------------ 1 0 2 2 0 3 3 1 7 4 0 5 5 1 11 6 0 7 7 2 29 8 1 17 9 1 19 10 0 11 11 1 23 12 0 13 13 2 53 14 1 29 15 1 31 16 0 17 17 3 137 18 0 19 19 6 1217 20 1 41 21 1 43 22 0 23 23 1 47 24 2 97 25 2 101 26 1 53 27 2 109 28 0 29 29 1 59 30 0 31 31 8 7937 32 3 257 33 1 67 34 2 137 35 1 71 36 0 37 37 2 149 38 5 1217 39 1 79 40 0 41 41 1 83 42 0 43 43 2 173 44 1 89 45 2 181 46 0 47 47 583 1487939695262196876907983166454197495251350196192890428923003345454869706240895712896623468784438158657419591298913094265537812046389415279164757669092989298186306341246574002177 48 1 97 49 2 197 50 1 101 51 1 103 52 0 53 53 1 107 54 1 109 55 4 881 56 1 113 57 2 229 58 0 59 59 5 1889 60 0 61 61 4 977 62 7 7937 63 1 127 64 2 257 65 1 131 66 0 67 67 2 269 68 1 137 69 1 139 70 0 71 71 3 569 72 0 73 73 2 293 74 1 149 75 1 151 76 4 1217 77 3 617 78 0 79 79 2 317 80 3 641 81 1 163 82 0 83 83 1 167 84 2 337 85 4 1361 86 1 173 87 2 349 88 0 89 89 1 179 90 1 181 91 8 23297 92 7 11777 93 2 373 94 582 1487939695262196876907983166454197495251350196192890428923003345454869706240895712896623468784438158657419591298913094265537812046389415279164757669092989298186306341246574002177 95 1 191 96 0 97 97 2 389 98 1 197 99 1 199 100 0 101 101 3 809 102 0 103 103 16 6750209 104 5 3329 105 1 211 106 0 107 107 3 857 108 0 109 109 6 6977 110 3 881 111 1 223 112 0 113 113 1 227 114 1 229 115 2 461 116 1 233 117 3 937 118 4 1889 119 1 239 120 1 241 121 8 30977 122 3 977 123 6 7873 124 6 7937 125 1 251 126 0 127 127 2 509 128 1 257 129 3 1033 130 0 131 131 1 263 132 4 2113 133 4 2129 134 1 269 135 1 271 136 0 137 137 3 1097 138 0 139 139 2 557 140 1 281 141 1 283 142 2 569 143 53 1288029493427961857 144 2 577 145 6 9281 146 1 293 147 8 37633 148 0 149 149 3 1193 150 0 151 151 4 2417 152 3 1217 153 1 307 154 2 617 155 1 311 156 0 157 157 8 40193 158 1 317 159 6 10177 160 2 641 161 3 1289 162 0 163 163 2 653 164 9 83969 165 1 331 166 0 167 167 7 21377 168 1 337 169 2 677 170 3 1361 171 8 43777 172 0 173 173 1 347 174 1 349 175 2 701 176 1 353 177 2 709 178 0 179 179 1 359 180 0 181 181 4 2897 182 7 23297 183 1 367 184 6 11777 185 3 1481 186 1 373 187 6 11969 188 581 1487939695262196876907983166454197495251350196192890428923003345454869706240895712896623468784438158657419591298913094265537812046389415279164757669092989298186306341246574002177 189 1 379 190 0 191 191 1 383 192 0 193 193 2 773 194 1 389 195 4 3121 196 0 197 197 15 6455297 198 0 199 199 2 797 200 1 401 201 3 1609 202 2 809 203 13 1662977 204 1 409 205 2 821 206 15 6750209 207 2 829 208 4 3329 209 1 419 210 0 211 211 20 221249537 212 3 1697 213 2 853 214 2 857 215 1 431 216 1 433 217 66 16011773855979890802689 218 5 6977 219 1 439 220 2 881 221 1 443 222 0 223 223 8 57089 224 1 449 225 3 1801 226 0 227 227 11 464897 228 0 229 229 6 14657 230 1 461 231 1 463 232 0 233 233 1 467 234 2 937 235 2 941 236 3 1889 237 4 3793 238 0 239 239 1 479 240 0 241 241 36 16561393893377 242 7 30977 243 1 487 244 2 977 245 1 491 246 5 7873 247 6 15809 248 5 7937 249 1 499 250 0 251 251 1 503 252 2 1009 253 2 1013 254 1 509 255 2 1021 256 0 257 257 279 249632952651006185613150855026822179503549278818199928480857894651449200648869292015617 258 2 1033 259 38 71193377898497 260 1 521 261 1 523 262 0 263 263 29 141197049857 264 3 2113 265 2 1061 266 3 2129 267 2 1069 268 0 269 269 3 2153 270 0 271 271 4 4337 272 11 557057 273 1 547 274 2 1097 275 7 35201 276 0 277 277 2 1109 278 1 557 279 2 1117 280 0 281 281 1 563 282 0 283 283 30 303868936193 284 1 569 285 1 571 286 52 1288029493427961857 287 3 2297 288 1 577 289 10 295937 290 5 9281 291 4 4657 292 0 293 293 1 587 294 7 37633 295 2 1181 296 1 593 297 3 2377 298 2 1193 299 1 599 300 1 601 301 4 4817 302 3 2417 303 1 607 304 2 1217 305 3 2441 306 0 307 307 2 1229 308 1 617 309 1 619 310 0 311 311 9 159233 312 0 313 313 4 5009 314 7 40193 315 1 631 316 0 317 317 7 40577 318 5 10177 319 2 1277 320 1 641 321 1 643 322 2 1289 323 1 647 324 2 1297 325 2 1301 326 1 653 327 3 2617 328 8 83969 329 1 659 330 0 331 331 4 5297 332 3 2657 333 5 10657 334 6 21377 335 19 175636481 336 0 337 337 4 5393 338 1 677 339 3 2713 340 2 1361 341 1 683 342 7 43777 343 2 1373 344 3 2753 345 1 691 346 0 347 347 3 2777 348 0 349 349 10 357377 350 1 701 351 12 1437697 352 0 353 353 21 740294657 354 1 709 355 6 22721 356 5 11393 357 2 1429 358 0 359 359 1 719 360 6 23041 361 28 96905199617 362 3 2897 363 1 727 364 6 23297 365 5 11681 366 0 367 367 12 1503233 368 5 11777 369 1 739 370 2 1481 371 1 743 372 0 373 373 2 1493 374 5 11969 375 1 751 376 580 1487939695262196876907983166454197495251350196192890428923003345454869706240895712896623468784438158657419591298913094265537812046389415279164757669092989298186306341246574002177 377 11 772097 378 0 379 379 14 6209537 380 1 761 381 3 3049 382 0 383 383 6393 11693945185971565896920916176753769281418376445302724140914106576604960252116205468905429628661873192664799900323401294531072465400997845029722990758855393414014415817179228695517839305455702961095094596926622802342799137107509767542153683280899327558274011281588755909890607960835140712630830933978801393590855371457894042968287926562847826310125559303901351824980311279986492793008248059208985097459095049075732193161126922389950080848742183055141518931962329796357335158955758486061360294773463111842316561192036096585088267052290025273980611139612478214293303564141730470933187279751846912161098280963960686648202780382930927114525552446602357404550468641236474238897222372272898562140228039886991631673186995098587756569010989657598363351856992206826342175536967926902668804937341514786382018872919876784539436965319822540039220122728568129762675989071883516915894567537630751801497223803135172643203770169327233350522822938630733126833423559124391441973547309619943019237705312515304113424366223388373606440335025932390399945086075175009569272136997988977568262327875607690344516747889133920438003737328060362069562108376086129279385800262195985974144460914705464874882401864174074796383557151951711000378565395148939760434428093058777242253682181813425273399277638142811972296863003382484684788329148214958434057306251885787781329925372401240556666727438408378656900945061970219566055969587385482421092779185798692904507774583223151161566406541599486350580593707153172641891804260963429951215526999443852964537303345106153870841180251403751871193132336680841124129779119999935597712685839886558769823834654994044516702436738265181698869580022472787153167463772595005393815295009535991557511340157179280662197799109181549751673455040271529561595718940092424231253150263268513067972937042222806102175350331146290864120703025608712817763221723427454002746818270565050919821097445991953785331131470462682015972815241620750337 384 1 769 385 8 98561 386 1 773 387 2 1549 388 0 389 389 11 796673 390 3 3121 391 4 6257 392 3 3137 393 1 787 394 14 6455297 395 5 12641 396 0 397 397 4 6353 398 1 797 399 2 1597 400 0 401 </pre> Line 2,190 ⟶ 2,644: <!--</syntaxhighlight>--> Output same as Wren (plus a few not particularly helpful digit counts). =={{header\|Python}}== {{libheader\|gmpy2}} {{trans\|Nim}} <syntaxhighlight lang="python" line> # primesn2m1.py by Xing216 from gmpy2 import is_prime, mpz print(" n m prime") for n in range(1, 401): m = 0 term = mpz(n) while True: if is_prime(term + 1): print(f"{n:3d} {m} {term + 1:5d}") break m += 1 term = 2 }</syntaxhighlight> {{out}} <pre style="height:20ex"> n m prime 1 0 2 2 0 3 3 1 7 4 0 5 5 1 11 6 0 7 7 2 29 8 1 17 9 1 19 10 0 11 11 1 23 12 0 13 13 2 53 14 1 29 15 1 31 16 0 17 17 3 137 18 0 19 19 6 1217 20 1 41 21 1 43 22 0 23 23 1 47 24 2 97 25 2 101 26 1 53 27 2 109 28 0 29 29 1 59 30 0 31 31 8 7937 32 3 257 33 1 67 34 2 137 35 1 71 36 0 37 37 2 149 38 5 1217 39 1 79 40 0 41 41 1 83 42 0 43 43 2 173 44 1 89 45 2 181 46 0 47 47 583 1487939695262196876907983166454197495251350196192890428923003345454869706240895712896623468784438158657419591298913094265537812046389415279164757669092989298186306341246574002177 48 1 97 49 2 197 50 1 101 51 1 103 52 0 53 53 1 107 54 1 109 55 4 881 56 1 113 57 2 229 58 0 59 59 5 1889 60 0 61 61 4 977 62 7 7937 63 1 127 64 2 257 65 1 131 66 0 67 67 2 269 68 1 137 69 1 139 70 0 71 71 3 569 72 0 73 73 2 293 74 1 149 75 1 151 76 4 1217 77 3 617 78 0 79 79 2 317 80 3 641 81 1 163 82 0 83 83 1 167 84 2 337 85 4 1361 86 1 173 87 2 349 88 0 89 89 1 179 90 1 181 91 8 23297 92 7 11777 93 2 373 94 582 1487939695262196876907983166454197495251350196192890428923003345454869706240895712896623468784438158657419591298913094265537812046389415279164757669092989298186306341246574002177 95 1 191 96 0 97 97 2 389 98 1 197 99 1 199 100 0 101 101 3 809 102 0 103 103 16 6750209 104 5 3329 105 1 211 106 0 107 107 3 857 108 0 109 109 6 6977 110 3 881 111 1 223 112 0 113 113 1 227 114 1 229 115 2 461 116 1 233 117 3 937 118 4 1889 119 1 239 120 1 241 121 8 30977 122 3 977 123 6 7873 124 6 7937 125 1 251 126 0 127 127 2 509 128 1 257 129 3 1033 130 0 131 131 1 263 132 4 2113 133 4 2129 134 1 269 135 1 271 136 0 137 137 3 1097 138 0 139 139 2 557 140 1 281 141 1 283 142 2 569 143 53 1288029493427961857 144 2 577 145 6 9281 146 1 293 147 8 37633 148 0 149 149 3 1193 150 0 151 151 4 2417 152 3 1217 153 1 307 154 2 617 155 1 311 156 0 157 157 8 40193 158 1 317 159 6 10177 160 2 641 161 3 1289 162 0 163 163 2 653 164 9 83969 165 1 331 166 0 167 167 7 21377 168 1 337 169 2 677 170 3 1361 171 8 43777 172 0 173 173 1 347 174 1 349 175 2 701 176 1 353 177 2 709 178 0 179 179 1 359 180 0 181 181 4 2897 182 7 23297 183 1 367 184 6 11777 185 3 1481 186 1 373 187 6 11969 188 581 1487939695262196876907983166454197495251350196192890428923003345454869706240895712896623468784438158657419591298913094265537812046389415279164757669092989298186306341246574002177 189 1 379 190 0 191 191 1 383 192 0 193 193 2 773 194 1 389 195 4 3121 196 0 197 197 15 6455297 198 0 199 199 2 797 200 1 401 201 3 1609 202 2 809 203 13 1662977 204 1 409 205 2 821 206 15 6750209 207 2 829 208 4 3329 209 1 419 210 0 211 211 20 221249537 212 3 1697 213 2 853 214 2 857 215 1 431 216 1 433 217 66 16011773855979890802689 218 5 6977 219 1 439 220 2 881 221 1 443 222 0 223 223 8 57089 224 1 449 225 3 1801 226 0 227 227 11 464897 228 0 229 229 6 14657 230 1 461 231 1 463 232 0 233 233 1 467 234 2 937 235 2 941 236 3 1889 237 4 3793 238 0 239 239 1 479 240 0 241 241 36 16561393893377 242 7 30977 243 1 487 244 2 977 245 1 491 246 5 7873 247 6 15809 248 5 7937 249 1 499 250 0 251 251 1 503 252 2 1009 253 2 1013 254 1 509 255 2 1021 256 0 257 257 279 249632952651006185613150855026822179503549278818199928480857894651449200648869292015617 258 2 1033 259 38 71193377898497 260 1 521 261 1 523 262 0 263 263 29 141197049857 264 3 2113 265 2 1061 266 3 2129 267 2 1069 268 0 269 269 3 2153 270 0 271 271 4 4337 272 11 557057 273 1 547 274 2 1097 275 7 35201 276 0 277 277 2 1109 278 1 557 279 2 1117 280 0 281 281 1 563 282 0 283 283 30 303868936193 284 1 569 285 1 571 286 52 1288029493427961857 287 3 2297 288 1 577 289 10 295937 290 5 9281 291 4 4657 292 0 293 293 1 587 294 7 37633 295 2 1181 296 1 593 297 3 2377 298 2 1193 299 1 599 300 1 601 301 4 4817 302 3 2417 303 1 607 304 2 1217 305 3 2441 306 0 307 307 2 1229 308 1 617 309 1 619 310 0 311 311 9 159233 312 0 313 313 4 5009 314 7 40193 315 1 631 316 0 317 317 7 40577 318 5 10177 319 2 1277 320 1 641 321 1 643 322 2 1289 323 1 647 324 2 1297 325 2 1301 326 1 653 327 3 2617 328 8 83969 329 1 659 330 0 331 331 4 5297 332 3 2657 333 5 10657 334 6 21377 335 19 175636481 336 0 337 337 4 5393 338 1 677 339 3 2713 340 2 1361 341 1 683 342 7 43777 343 2 1373 344 3 2753 345 1 691 346 0 347 347 3 2777 348 0 349 349 10 357377 350 1 701 351 12 1437697 352 0 353 353 21 740294657 354 1 709 355 6 22721 356 5 11393 357 2 1429 358 0 359 359 1 719 360 6 23041 361 28 96905199617 362 3 2897 363 1 727 364 6 23297 365 5 11681 366 0 367 367 12 1503233 368 5 11777 369 1 739 370 2 1481 371 1 743 372 0 373 373 2 1493 374 5 11969 375 1 751 376 580 1487939695262196876907983166454197495251350196192890428923003345454869706240895712896623468784438158657419591298913094265537812046389415279164757669092989298186306341246574002177 377 11 772097 378 0 379 379 14 6209537 380 1 761 381 3 3049 382 0 383 383 6393 11693945185971565896920916176753769281418376445302724140914106576604960252116205468905429628661873192664799900323401294531072465400997845029722990758855393414014415817179228695517839305455702961095094596926622802342799137107509767542153683280899327558274011281588755909890607960835140712630830933978801393590855371457894042968287926562847826310125559303901351824980311279986492793008248059208985097459095049075732193161126922389950080848742183055141518931962329796357335158955758486061360294773463111842316561192036096585088267052290025273980611139612478214293303564141730470933187279751846912161098280963960686648202780382930927114525552446602357404550468641236474238897222372272898562140228039886991631673186995098587756569010989657598363351856992206826342175536967926902668804937341514786382018872919876784539436965319822540039220122728568129762675989071883516915894567537630751801497223803135172643203770169327233350522822938630733126833423559124391441973547309619943019237705312515304113424366223388373606440335025932390399945086075175009569272136997988977568262327875607690344516747889133920438003737328060362069562108376086129279385800262195985974144460914705464874882401864174074796383557151951711000378565395148939760434428093058777242253682181813425273399277638142811972296863003382484684788329148214958434057306251885787781329925372401240556666727438408378656900945061970219566055969587385482421092779185798692904507774583223151161566406541599486350580593707153172641891804260963429951215526999443852964537303345106153870841180251403751871193132336680841124129779119999935597712685839886558769823834654994044516702436738265181698869580022472787153167463772595005393815295009535991557511340157179280662197799109181549751673455040271529561595718940092424231253150263268513067972937042222806102175350331146290864120703025608712817763221723427454002746818270565050919821097445991953785331131470462682015972815241620750337 384 1 769 385 8 98561 386 1 773 387 2 1549 388 0 389 389 11 796673 390 3 3121 391 4 6257 392 3 3137 393 1 787 394 14 6455297 395 5 12641 396 0 397 397 4 6353 398 1 797 399 2 1597 400 0 401 </pre> =={{header\|Raku}}== First 382 in less than a second. 383 pushes the total accumulated time over 25 seconds. Line 2,595 ⟶ 3,469: 399 2: 1597 400 0: 401</pre> =={{header\|RPL}}== As big ints are limited to 499 digits, it is not possible to calculate the 47th prime number. {{works with\|HP\|49}} « <span style="color:red">{ } 1 45</span> '''FOR''' n <span style="color:red">0</span> '''WHILE''' <span style="color:red">2</span> OVER ^ n <span style="color:red">1</span> + DUP ISPRIME? NOT '''REPEAT''' DROP <span style="color:red">1</span> + '''END''' NIP + '''NEXT''' » '<span style="color:blue">TASK</span>' STO {{out}} <pre> 1: { 2 3 7 5 11 7 29 17 19 11 23 13 53 29 31 17 137 19 1217 41 43 23 47 97 101 53 109 29 59 31 7937 257 67 137 71 37 149 1217 79 41 83 43 173 89 181 } </pre> =={{header\|Sidef}}== Line 2,608 ⟶ 3,500: {{libheader\|Wren-gmp}} {{libheader\|Wren-fmt}} <syntaxhighlight lang="~~ecmascript~~wren">import "./gmp" for Mpz import "./fmt" for Fmt