1987
This number is a prime.
Single Curio View: (Seek other curios for this number)
There are 1987 ways to place four non-attacking chess kings
on a 5 × 5 board. [Astudillo]
Submitted: 2019-12-22 22:29:53; Last Modified: 2019-12-22 22:36:31.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell