Cullen Number Calculator

C(n) = n·2^n + 1

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About Cullen Number Calculator

A Cullen number calculator computing C(n) = n·2^n + 1. Cullen primes: C(n) prime for n=1,141,4713,5795,6611,18496... Very rare! Always divisible by p if n≡−1(mod p−1) and 2 has odd order mod p. Shows sequence and factors. Client-side.

Cullen Number Calculator Features

  • C(n) computation
  • Primality test
  • Sequence
  • Divisibility
  • Comparison

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