Finding N Consecutive Composite NumbersDate: 02/26/2001 at 01:01:52 From: Amber Parks Subject: How many primes? Given a number N > 1, show that there are N-1 consecutive numbers that are not prime. Date: 02/26/2001 at 17:05:36 From: Doctor Rob Subject: Re: How many primes? Thanks for writing to Ask Dr. Math, Amber. Try numbers between N! + 2 and N! + N. They will have factors 2, 3, 4, ..., N, respectively. - Doctor Rob, The Math Forum http://mathforum.org/dr.math/ |
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