32113...31123 (839-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

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A palindromic prime formed by concatenating f(2009) and the reverse of f(2009); discarding one of the two equal digits in the junction. [Rivera]

Submitted: 2020-08-11 01:14:52; Last Modified: 2020-08-31 00:56:19.