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Search: id:A112634
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| A112634 |
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Mersenne prime indices that are not Gaussian primes. |
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+0
4
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| 2, 5, 13, 17, 61, 89, 521, 2281, 3217, 4253, 9689, 9941, 11213, 19937, 21701, 23209, 44497, 132049, 859433, 1398269, 2976221, 3021377, 6972593, 13466917, 30402457
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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It is known that 30402457, 32582657, 42643801 and 43112609 are in the sequence, but there may be gaps in this list because the set of Mersenne primes is complete (so far) only up to 2^13466917-1. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 31 2009]
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LINKS
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C. K. Caldwell, The largest known primes. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 31 2009]
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FORMULA
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A000043 INTERSECT A002313. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 06 2008
A000043 SET-MINUS A112633.
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CROSSREFS
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Cf. A112633, A000043, A002313.
Sequence in context: A156009 A164620 A156013 this_sequence A045364 A045365 A104491
Adjacent sequences: A112631 A112632 A112633 this_sequence A112635 A112636 A112637
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KEYWORD
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nonn
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AUTHOR
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Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Dec 27 2005
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EXTENSIONS
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Edited by R. J. Mathar, Oct 06 2008
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