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Proth Primes

In number theory, a Proth number, named after the mathematician François Proth, is a number of the form k×2n+1 where k is an odd positive integer and n is a positive integer such that 2n > k.

Proth primes are such numbers which are also primes.

The Cullen primes (n×2n+1) and Fermat primes (22n+1) are special cases of Proth numbers.

First 20: 3, 5, 13, 17, 41, 97, 113, 193, 241, 257, 353, 449, 577, 641, 673, 769, 929, 1153, 1217, 1409

Checkout list of first: 10, 50, 100, 500 proth primes. You can also check all proth primes.

Checkout proth primes up to: 100, 500, 1000, 10000.

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