31

This number is a prime.

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

The smallest Gaussian emirp. [Loungrides]

The smallest primorial emirp. [Loungrides]

The smallest of three consecutive primes, (31, 37, 41), such that the product of the first two plus 1 is divided by the 3rd. Note that it is the largest known such case. [Loungrides]

(There are 7 curios for this number that have not yet been approved by an editor.)