12
This number is a composite.
Single Curio View: (Seek other curios for this number)
The only number less than one-half million such that n ± 1, n/2 ± 1, & n/3 ± 1 are all primes. [Murthy]
Submitted: 2002-02-11 19:23:44; Last Modified: 2024-05-12 19:08:19.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell