6560
This number is a composite.
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6560 = 2^5 * 5 * 41 is the smallest integer n where n and
n+1 (6561 = 3^8) are both products of 7 or more primes. [Post]
Submitted: 2009-07-10 06:38:07; Last Modified: 2009-07-10 13:37:10.
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