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pdurrant · 09-09-2011, 03:38 PM

Ignoring the easy ones, divisible by 2, 3 or 5 we have:
100,319 (divisible by 43)
100,321 (divisible by 13)
100,327 (divisible by 41)
100,331 (divisible by 7)

And the next prime is 100,333

(Well, I have a little spreadsheet that works out whether a number is prime or not, and what its divisors are if it's not. And also (cough) a list of the first million primes...)

09-09-2011, 03:38 PM	#27
pdurrant The Grand Mouse 高貴的老鼠 Posts: 74,102 Karma: 315558332 Join Date: Jul 2007 Location: Norfolk, England Device: Kindle Oasis	Ignoring the easy ones, divisible by 2, 3 or 5 we have: 100,319 (divisible by 43) 100,321 (divisible by 13) 100,327 (divisible by 41) 100,331 (divisible by 7) And the next prime is 100,333 (Well, I have a little spreadsheet that works out whether a number is prime or not, and what its divisors are if it's not. And also (cough) a list of the first million primes...)