241

This number is a prime.

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

+ The smallest duodecimal prime: p = (x^12 + y^12 )/(x^4 + y^4 ). [Russo]

+ The smallest prime p such that the concatenation of p in base 10 down up to base 2 is prime. [Russo]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell