**Mersenne primes (of form 2^p - 1 where p is a prime).**

*3, 7, 31, 127, 8191, 131071, 524287, 2147483647, 2305843009213693951*

Index of A-numbers in seqfan: by ascending order
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*12 seqfan posts*

*Fri Mar 12 10:09:44 CET 2010* [seqfan] editing A000217 Triangular numbers (long message)

*Thu Mar 11 14:26:02 CET 2010* [seqfan] Re: more strangeness (A000079 "Powers of 2" and many others)

*Sat Mar 6 20:57:07 CET 2010* [seqfan] Re: Sums of a Mersenne prime and a Fermat prime; Means of a Mersenne prime and a Fermat prime; prime means of a Mersenne prime and a Fermat prime

*Sat Mar 6 10:34:06 CET 2010* [seqfan] Re: Sums of a Mersenne prime and a Fermat prime; Means of a Mersenne prime and a Fermat prime; prime means of a Mersenne prime and a Fermat prime

*Sat Mar 6 07:09:18 CET 2010* [seqfan] Sums of a Mersenne prime and a Fermat prime; Means of a Mersenne prime and a Fermat prime; prime means of a Mersenne prime and a Fermat prime

*Fri Mar 5 09:34:57 CET 2010* [seqfan] Re: Sums of three Mersenne primes, and prime sums of three Mersenne primes

*Fri Mar 5 08:25:24 CET 2010* [seqfan] Re: Sums of three Mersenne primes, and prime sums of three Mersenne primes

*Fri Mar 5 01:05:55 CET 2010* [seqfan] Sums of three Mersenne primes, and prime sums of three Mersenne primes

*Thu Mar 4 12:11:26 CET 2010* [seqfan] more strangeness (A000079 "Powers of 2" and many others)

*Mon Mar 1 21:04:43 CET 2010* [seqfan] Re: Decimal expansion of sum of the reciprocals of the Mersenne primes

*Mon Mar 1 18:03:28 CET 2010* [seqfan] Decimal expansion of sum of the reciprocals of the Mersenne primes

*Tue Apr 21 23:36:56 CEST 2009* [seqfan] comments about perfect numbers

Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword

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