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Search: id:A108493
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| A108493 |
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Integers n such that 10^n-57 is prime. |
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1
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| 2, 7, 10, 11, 17, 19, 39, 49, 50, 61, 95, 106, 187, 196, 849, 889
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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No others less than 5000.
Numbers corresponding to terms 849 and 889 are certified primes. (Primo 2.2.0 beta) - Ryan Propper (rpropper(AT)stanford.edu), Jul 13 2005
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EXAMPLE
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n = 7 is a member because: 10^7-57 = 10000000-57 = 9999943, which is prime.
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CROSSREFS
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Cf. A089675, A095714, A092767, A108327, A108328, A108329, A108330, A108331, A108332.
Sequence in context: A045281 A050596 A045266 this_sequence A069494 A134712 A030344
Adjacent sequences: A108490 A108491 A108492 this_sequence A108494 A108495 A108496
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KEYWORD
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hard,more,nonn
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AUTHOR
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Julien Peter Benney (jpbenney(AT)ftml.net), Jul 06 2005
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