17

This number is a prime.

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2*7*13 - 3*5*11 = 17 (first seven primes); Note that 17 (prime(7)) is of the form A - B where A*B = prime(1)*prime(2)*...*prime(6). Is 17 the largest such prime? [Firoozbakht]

Submitted: 2009-03-27 16:31:29; Last Modified: 2009-03-31 23:05:52.