Mersenne prime
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In mathematics, a Mersenne prime is a prime number that is one less than a power of two. That is, it is a prime number of the form Mₙ = 2ⁿ − 1 for some integer n. They are named after Marin Mersenne, a French Minim friar, who studied them in the... Wikipedia
Conjectured no. of terms: Infinite
First terms: 3, 7, 31, 127, 8191
Largest known term: 282,589,933 − 1 (December 7, 2018)
Named after: Marin Mersenne
No. of known terms: 51
OEIS index: A000668; Mersenne primes (of form 2^p − 1 where p is a prime)
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