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Search: id:A112391
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| A112391 |
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Primes p such that 23*p + 2 is also prime. |
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+0
2
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| 3, 7, 19, 37, 43, 67, 103, 157, 193, 277, 337, 367, 373, 379, 397, 439, 457, 463, 547, 607, 829, 859, 877, 919, 1009, 1033, 1039, 1117, 1129, 1213, 1249, 1297, 1429, 1543, 1579, 1627, 1657, 1699, 1723, 1759, 1783, 1789, 1867, 1993, 1999, 2053, 2083, 2089
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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If p=277 then 23*p + 2 = 6373 (prime).
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PROGRAM
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(PARI) forprime(p=2, 5000, if(isprime(23*p+2), print1(p, ", "))) (Herrgesell)
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CROSSREFS
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Cf. A023208.
Sequence in context: A145039 A113916 A049490 this_sequence A127928 A047025 A163572
Adjacent sequences: A112388 A112389 A112390 this_sequence A112392 A112393 A112394
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KEYWORD
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nonn
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Dec 04 2005
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EXTENSIONS
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More terms from Lambert Herrgesell (zero815(AT)googlemail.com), Dec 09 2005
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