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A109397
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Numbers n such that 22 * 10^n + 1 is prime.
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0
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0, 6, 10, 11, 102, 146, 296, 1415, 2324, 4374, 12590
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| All terms have been certified. Primality proof for the largest: PFGW Version 1.2.0 for Windows [FFT v23.8] Primality testing 22*10^12590+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 69.89% 22*10^12590+1 is prime! (47.5292s+0.3107s)
No more terms up to 31000.
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CROSSREFS
| Cf. A056807.
Sequence in context: A068442 A096549 A136812 * A133210 A141467 A105642
Adjacent sequences: A109394 A109395 A109396 * A109398 A109399 A109400
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KEYWORD
| more,nonn
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AUTHOR
| Jason Earls (zevi_35711(AT)yahoo.com), Aug 26 2005
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EXTENSIONS
| 0 added by Arkadiusz Wesolowski, Oct 27 2011
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