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A057329
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First member of a prime sextuplet in a 2p-1 progression.
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8
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16651, 33301, 165901, 331801, 385591, 445741, 478801, 580471, 1203121, 1768441, 1943371, 2041201, 2131141, 2240941, 2340661, 2393431, 2526721, 3277471, 3536881, 3623881, 3880381, 3897631, 4123621, 4415371, 4481881, 5278591
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Numbers n such that n remains prime through 5 iterations of function f(x) = 2x - 1.
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LINKS
| Index entries for sequences related to primes in arithmetic progressions
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EXAMPLE
| First sextuplet is (16651,33301,66601,133201,266401,532801).
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PROG
| (MAGMA) [ p: p in PrimesUpTo(6*10^6) | forall{q: k in [1..5] | IsPrime(q) where q is 2^k*(p-1)+1} ]; // Bruno Berselli, Nov 23 2011
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CROSSREFS
| Cf. A005382 and A005383; A057326, A057327, A057328, A057330, A005603.
Sequence in context: A109028 A183657 A170788 * A196023 A108843 A186311
Adjacent sequences: A057326 A057327 A057328 * A057330 A057331 A057332
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KEYWORD
| nonn
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AUTHOR
| Patrick De Geest (pdg(AT)worldofnumbers.com), Aug 15 2000.
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