3-7-31-?-8191-131071Series teasers are where you try to complete the sequence of a series of letters, numbers or objects.
What number is missing from the series?
HintThese are special prime numbers.
These are the first six Mersenne primes. Mersenne primes are prime numbers of the form 2^p - 1 where p is a prime number.
3 = 2^2 - 1
7 = 2^3 - 1
31 = 2^5 - 1
127 = 2^7 - 1
8191 = 2^13 - 1
131071 = 2^17 - 1
Mersenne prime candidates are often the targets in searches for record-breaking prime numbers.
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