This number is a prime.
Single Curio View: (Seek other curios for this number)The largest prime of the form |a^b - c^d|, where a, b, c and d are the first 4 primes. 311 = 7^3 - 2^5. Curiously, 311 = prime(2^6). [Post]
Submitted: 2009-11-25 11:38:02; Last Modified: 2009-11-27 14:14:53.
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