Talk:Cullen and Woodall numbers
First observation: n must be odd because 2n is always even and primes rarely are.--Nigel Galloway (talk) 16:31, 13 January 2022 (UTC)
First observation: n must be odd because 2n is always even and primes rarely are.--Nigel Galloway (talk) 16:31, 13 January 2022 (UTC)