139

This number is a prime.

Single Curio View:   (Seek other curios for this number)
You cannot build an almost (i.e., without the top ball) square pyramidal stack of cannonballs with a prime number of cannonballs greater than 139. [Honaker]

Submitted: 2018-01-17 19:50:00;   Last Modified: 2018-01-18 07:22:42.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell