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Search: id:A106808
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| A106808 |
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Numbers n such that 4440011 * 10^n - 1 is prime. |
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+0
1
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| 12, 44, 75, 237, 3186, 4379, 5535, 6363, 13707, 14463
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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These are primes with square digits and they have all been certified. No more terms up to 37000. Primality proof for the largest: PFGW Version 20041001.Win_Stable (v1.2 RC1b) [FFT v23.8] Primality testing 4440011*10^14463-1 [N+1, Brillhart-Lehmer-Selfridge] Running N+1 test using discriminant 3, base 1+sqrt(3) 4440011*10^14463-1 is prime! (268.8294s+0.0548s)
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LINKS
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R. Ondrejka, The Top Ten: a Catalogue of Primal Configurations.
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CROSSREFS
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Cf. A061246.
Sequence in context: A116187 A009790 A009519 this_sequence A007899 A100156 A009785
Adjacent sequences: A106805 A106806 A106807 this_sequence A106809 A106810 A106811
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KEYWORD
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nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), May 18 2005
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