911

This number is a prime.

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If you start a sequence with 2, where each additional term is the next prime after reversal of the previous term, then 911 is the first term to repeat: 2, 3, 5, 7, 11, 13, 37, 79, 101, 103, 307, 709, 911, 127, 727, 733, 347, 751, 163, 367, 769, 971, 181, 191, 193, 397, 797, 809, 911. [Gaydos]

Submitted: 2020-03-12 06:34:17; Last Modified: 2020-07-01 23:15:49.