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A007505
Primes of form 3*2^n -1.
(Formerly M1395)
+0
5
2, 5, 11, 23, 47, 191, 383, 6143, 786431, 51539607551, 824633720831, 26388279066623, 108086391056891903, 55340232221128654847, 226673591177742970257407, 59421121885698253195157962751, 30423614405477505635920876929023
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.
AT&T Labs Research
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