Prime triplets: Difference between revisions
Added XPL0 example.
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Found 43 such prime triplets.
</pre>
=={{header|XPL0}}==
<lang XPL0>func IsPrime(N); \Return 'true' if N is a prime number
int N, I;
[if N <= 1 then return false;
for I:= 2 to sqrt(N) do
if rem(N/I) = 0 then return false;
return true;
];
int Count, P;
[ChOut(0, ^ );
Count:= 0;
P:= 3;
repeat if IsPrime(P) & IsPrime(P+2) & IsPrime(P+6) then
[IntOut(0, P); ChOut(0, ^ );
IntOut(0, P+2); ChOut(0, ^ );
IntOut(0, P+6); ChOut(0, ^ );
Count:= Count+1;
if rem(Count/5) then ChOut(0, 9\tab\) else CrLf(0);
];
P:= P+2;
until P >= 5500;
CrLf(0);
IntOut(0, Count);
Text(0, " prime triplets found below 5500.
");
]</lang>
{{out}}
<pre>
5 7 11 11 13 17 17 19 23 41 43 47 101 103 107
107 109 113 191 193 197 227 229 233 311 313 317 347 349 353
461 463 467 641 643 647 821 823 827 857 859 863 881 883 887
1091 1093 1097 1277 1279 1283 1301 1303 1307 1427 1429 1433 1481 1483 1487
1487 1489 1493 1607 1609 1613 1871 1873 1877 1997 1999 2003 2081 2083 2087
2237 2239 2243 2267 2269 2273 2657 2659 2663 2687 2689 2693 3251 3253 3257
3461 3463 3467 3527 3529 3533 3671 3673 3677 3917 3919 3923 4001 4003 4007
4127 4129 4133 4517 4519 4523 4637 4639 4643 4787 4789 4793 4931 4933 4937
4967 4969 4973 5231 5233 5237 5477 5479 5483
43 prime triplets found below 5500.
</pre>
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