84

This number is a composite.

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The smallest integer that can be expressed as the sum of two primes in eight different ways: {5 + 79}, {11 + 73}, {13 + 71}, {17 + 67}, {23 + 61}, {31 + 53}, {37 + 47}, {41 + 43}. [Schiffman]

Submitted: 2010-12-21 19:58:41; Last Modified: 2016-07-10 16:59:53.