79

This number is a prime.

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An emirp and sum of three reversible primes: 79 = 11 + 31 + 37. Curiously, the sum holds for the reversals: 97 = 11 + 13 + 73. [Silva]

Submitted: 2006-11-29 23:04:48; Last Modified: 2008-01-30 17:28:00.