This site will be down for maintenance beginning noon CDT (5pm UTC) Wed April 14

# 31

This number is a prime.

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

© Baskin-Robbins |

31 is the smallest multidigit prime in the decimal expansion of cube root of 31. [Gupta]

The reverse concatenation of first two triangular numbers is prime. [Gupta]

The smallest prime that can be represented as the sum of two triangular numbers in two different ways (21 + 10 and 28 + 3). [Gupta]

The smallest multidigit self prime. [Gupta]

The 31st prime is preceded by reversal(31) consecutive composite numbers. [Gupta]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell