euler/003.rb

14 lines
239 B
Ruby
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2011-05-31 15:31:13 +00:00
def prime_factor(x)
i=2
while i<=Math.sqrt(x)
if x % i == 0
return [i] << prime_factor( x / i )
end
i += 1
end
return [x]
end
puts prime_factor(600851475143)
# puts prime_factor(13195)