881

This number is a prime.

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

+ The largest three-digit prime of any form ABC such that A + BC, AB + C, and A + B + C are prime. In the case of 881: 8 + 81; 88 + 1; and 8 + 8 + 1 are all prime. [Kilpatrick]

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