Did you receive any emails choosing composite numbers? To me, 51 sounds prime. | Hacker News

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parfe on June 19, 2012 | parent | context | favorite | on: What happens when you ask people to pick the lowes...

Did you receive any emails choosing composite numbers? To me, 51 sounds prime.

_o2vs on June 20, 2012 | [–]

Yes, many! On the submission form, I even referred folks to Wikipedia's list of prime numbers but, alas.

tshaddox on June 20, 2012 | [–]

A number is divisible by 3 if the sum of its digits is divisible by 3.

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