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A055626
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First prime starting a chain of exactly n consecutive primes congruent to 5 modulo 6.
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4
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5, 23, 47, 251, 1889, 7793, 43451, 243161, 726893, 759821, 2280857, 1820111, 10141499, 40727657, 19725473, 136209239, 744771077, 400414121, 1057859471, 489144599, 13160911739, 766319189, 38451670931, 119618704427, 21549657539
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| The term "exactly" means that before the first and after the last primes of chain, the immediate primes are not congruent to 5 modulo 6.
a(21)>2^31, a(22)= 766319189. - Hugo Pfoertner (hugo(AT)pfoertner.org), Jul 31 2003
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LINKS
| J. K. Andersen, Consecutive Congruent Primes.
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PROG
| See link in A085516.
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CROSSREFS
| Cf. A055623, A055624, A055625, A085516.
Sequence in context: A107011 A031387 A057622 * A127200 A147113 A135771
Adjacent sequences: A055623 A055624 A055625 * A055627 A055628 A055629
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KEYWORD
| nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Jun 05 2000
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EXTENSIONS
| More terms from Reiner Martin (reinermartin(AT)hotmail.com), Jul 18 2001
More terms from Hugo Pfoertner (hugo(AT)pfoertner.org), Jul 31 2003
More terms from Jens Kruse Andersen (jens.k.a(AT)get2net.dk), May 30 2006
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Oct 27 2006
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