761

This number is a prime.

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The smallest emirp that can be represented as the sum of products of first n pairs of consecutive positive even numbers plus 1, (case n = 5), i.e., 2*4+6*8+10*12+14*16+18*20+1 = 761. [Loungrides]

Submitted: 2020-01-20 11:48:47; Last Modified: 2020-06-01 14:45:49.