Cullen and Woodall numbers: Difference between revisions
moved python into alphabetic order between phix and raku
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</pre>
Note the time given is for desktop/Phix 64bit, for comparison the Julia entry took about 20s on the same box. On 32-bit it is nearly 5 times slower (2 minutes and 38s) and hence under pwa/p2js in a browser (which is inherently 32bit) it is limited to the first 2 cullen primes only, but manages that in 0.4s.
=={{header|Raku}}==▼
<lang perl6>my @cullen = ^∞ .map: { $_ × 1 +< $_ + 1 };▼
my @woodall = ^∞ .map: { $_ × 1 +< $_ - 1 };▼
put "First 20 Cullen numbers: ( n × 2**n + 1)\n", @cullen[1..20]; # A002064▼
put "\nFirst 20 Woodall numbers: ( n × 2**n - 1)\n", @woodall[1..20]; # A003261▼
put "\nFirst 5 Cullen primes: (in terms of n)\n", @cullen.grep( &is-prime, :k )[^5]; # A005849▼
put "\nFirst 12 Woodall primes: (in terms of n)\n", @woodall.grep( &is-prime, :k )[^12]; # A002234</lang>▼
{{out}}▼
<pre>First 20 Cullen numbers: ( n × 2**n + 1)▼
3 9 25 65 161 385 897 2049 4609 10241 22529 49153 106497 229377 491521 1048577 2228225 4718593 9961473 20971521▼
First 20 Woodall numbers: ( n × 2**n - 1)▼
1 7 23 63 159 383 895 2047 4607 10239 22527 49151 106495 229375 491519 1048575 2228223 4718591 9961471 20971519▼
First 5 Cullen primes: (in terms of n)▼
1 141 4713 5795 6611▼
First 12 Woodall primes: (in terms of n)▼
2 3 6 30 75 81 115 123 249 362 384 462</pre>▼
=={{header|Python}}==
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done...
</pre>
▲=={{header|Raku}}==
▲<lang perl6>my @cullen = ^∞ .map: { $_ × 1 +< $_ + 1 };
▲my @woodall = ^∞ .map: { $_ × 1 +< $_ - 1 };
▲put "First 20 Cullen numbers: ( n × 2**n + 1)\n", @cullen[1..20]; # A002064
▲put "\nFirst 20 Woodall numbers: ( n × 2**n - 1)\n", @woodall[1..20]; # A003261
▲put "\nFirst 5 Cullen primes: (in terms of n)\n", @cullen.grep( &is-prime, :k )[^5]; # A005849
▲put "\nFirst 12 Woodall primes: (in terms of n)\n", @woodall.grep( &is-prime, :k )[^12]; # A002234</lang>
▲{{out}}
▲<pre>First 20 Cullen numbers: ( n × 2**n + 1)
▲3 9 25 65 161 385 897 2049 4609 10241 22529 49153 106497 229377 491521 1048577 2228225 4718593 9961473 20971521
▲First 20 Woodall numbers: ( n × 2**n - 1)
▲1 7 23 63 159 383 895 2047 4607 10239 22527 49151 106495 229375 491519 1048575 2228223 4718591 9961471 20971519
▲First 5 Cullen primes: (in terms of n)
▲1 141 4713 5795 6611
▲First 12 Woodall primes: (in terms of n)
▲2 3 6 30 75 81 115 123 249 362 384 462</pre>
=={{header|Ring}}==
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