Wagstaff primes: Difference between revisions
→{{header|J}}: include implementation for stretch goal
(→{{header|J}}: include stretch goal, throw in timings for fun) |
(→{{header|J}}: include implementation for stretch goal) |
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Line 268:
Stretch goal (times are elapsed times, machine was a 1.2GHz intel i3):
<syntaxhighlight lang=J>
T0=. 6!:1''
f=. 3%~1+2x^]
c=. 0
echo 'count power seconds'
for_p. p:i.1e4 do.
if. 1 p: f p do.
c=. c+1
echo 5 6 8j3":c, p, (6!:1'')-T0
if. 24 <: c do. EMPTY return. end.
end.
end.
}}_
count power seconds
1 3 0.004
2 5 0.006
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