319

This number is a composite.

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A MATHEMATICA search confirmed the three hundred nineteen digit almost-repdigit prime consisting of three hundred eighteen 3's followed by the digit 1. The closed formula for this term in the sequence is given by ((10^(319)-7)/3. [Schiffman]

Submitted: 2018-04-01 00:35:23; Last Modified: 2018-04-01 00:43:03.