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A083366
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Numbers n such that 7*11^n + 2 is prime.
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0
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1, 3, 5, 9, 23, 65, 95, 129, 161, 341, 439, 771, 819, 1031, 1099, 1443, 1923, 5793
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Values corresponding to 5, 9, 23, 65, 95, 129, 161, 341, 439, 771, 819, 1031, 1099 and 1443 (1504 digits) have been certified prime with Primo. Values for 1923 (2004 digits) and 5793 (6034 digits) are probable primes. There are no other terms <= 6000.
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PROG
| (PARI) for(n=1, 6000, if(isprime(7*11^n+2), print1(n, ", ")))
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CROSSREFS
| Sequence in context: A147038 A146275 A089636 * A006722 A039774 A114001
Adjacent sequences: A083363 A083364 A083365 * A083367 A083368 A083369
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KEYWORD
| nonn
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AUTHOR
| Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 03 2003
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