Comments on: Conundrum: Non-Prime

By: Bill

Bill — Tue, 25 Nov 2008 00:19:13 +0000

Indeed it does. Nice work, Bronx Richie!

By: Bronx Richie

Bronx Richie — Mon, 24 Nov 2008 05:05:51 +0000

27 seems to meet all your requirements.

By: Bill

Bill — Sat, 09 Aug 2008 03:52:24 +0000

Welcome, Tuna!

I meant that number is not prime, it is not the sum of two primes, and it is not the product of two primes.

There is only one two-digit number that meets these three conditions.

By: 100%Tuna (kunaalw@gmail.com)

100%Tuna (kunaalw@gmail.com) — Sat, 09 Aug 2008 02:52:00 +0000

now THAT’s an easy one…
you’re thinking of 21…
i.e. not prime as it has non-1 and non-21 factors i.e. 7 ^ 3
product of two primes: 7, 3
sum of 2 primes: 19, 2

BUT you could also be thinking of 14
i.e. not prime as it has non-1 and non-14 factors i.e. 7 ^ 2
product of two primes: 7, 2
sum of 2 primes: 11, 3

Or maybe 91?
i.e. not prime as it has non-1 and non-91 factors i.e. 13 ^ 7
product of two primes: 13, 7
sum of 2 primes: 89, 2
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BASICALLY YOUR QUESTION LACKS A UNIQUE SOLUTION. OR DID I INTERPRET THY QUESTION WRONGLY? (:
Nice blog, btw!