This number is a prime.

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

© Baskin-Robbins
+ If t(n) represents the nth triangular number, then 31 is the smallest prime of the form t(p) + t(q), where p and q are themselves prime. [Rupinski]

+ The smallest prime that is a generalized repunit in three different bases. [Rupinski]

+ The largest integer such that the average number of triangular numbers required to express the integers less than or equal to it is exactly two. [Rupinski]

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