31

This number is a prime.

Just showing those entries submitted by 'Capelle': (Click here to show all)

© Baskin-Robbins
+ (3131 - 1)/(31 - 1) is prime. [Capelle]

+ 3^31 - 2^31 is prime. [Capelle]

+ The largest known prime number such that the digits of its square are in descending order. [Capelle]

+ The largest known prime number p such that the decimal expansion of 3p does not contain any zero. [Capelle]

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