12379

This number is a prime.

The largest known prime p, (the 4th), such that p*2^p-1 is a Woodall prime. Note that the concatenation in order of the four primes, 2, 3, 751, 12379, that create Woodall primes, is also prime, i.e., 2375112379. [Loungrides]

The smallest primeval prime which is sum of distinct primeval primes, i.e., 12379 = 10079 + 1237 + 1013 + 37 + 13. [Capelle]