3581

This number is a prime.

+ The smallest prime p for which all the decimal digits of 31p are either zeros or ones (31 * 3581 = 111011). The next few primes of this type are 3583871, 32290681, 326132581, ... . [Keith]

(There is one curio for this number that has not yet been approved by an editor.)

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