66

This number is a composite.

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The smallest number that can be expressed as a sum of two primes in six different ways, i.e., 66=5+61=7+59=13+53=19+47=23+43=29+37. [Loungrides]

Submitted: 2011-09-10 08:37:05; Last Modified: 2018-05-05 17:34:27.