number
Cullen number
An integer of the form n·2ⁿ + 1 for a positive n. Not a Woodall number as n·2ⁿ − 1 alone, and not a Fermat number as 2^(2ⁿ)+1 alone.
number
An integer of the form n·2ⁿ + 1 for a positive n. Not a Woodall number as n·2ⁿ − 1 alone, and not a Fermat number as 2^(2ⁿ)+1 alone.