31

This number is a prime.

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

+ There are at least 31 Fibonacci primes. [Homewood]

+ There are 31 prime quintuplets of the form {p, p + 4, p + 6, p + 10, p + 12} less than one million. [Homewood]

+ There are 31 known Wagstaff primes, as of 2018. [Homewood]

(There are 10 curios for this number that have not yet been approved by an editor.)

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