1569889

This number is a prime.

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The start of a sequence of five primes (1569889 -> 155521 -> 251 -> 11 -> 2) whereas after the first all the others are the product of the digits of the previous prime plus one. [Rivera]

Submitted: 2018-10-02 22:36:45; Last Modified: 2018-10-03 02:13:28.