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Search: id:A108326
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| A108326 |
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Integers n such that 10^n-17 is prime. |
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+0
1
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| 2, 3, 6, 30, 40, 86, 128, 264, 639, 912, 1932, 4650, 5038
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Some of the larger entries may only correspond to probable primes.
Terms 639 and 912 correspond to certified primes (Primo 2.2.0 beta). - Ryan Propper (rpropper(AT)stanford.edu), Jul 12 2005
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EXAMPLE
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If n = 3 we have 10^3-17 = 1000-17 = 983, which is prime.
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CROSSREFS
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Cf. A089675, A095714, A092767.
Sequence in context: A090445 A018318 A051717 this_sequence A002234 A074005 A082611
Adjacent sequences: A108323 A108324 A108325 this_sequence A108327 A108328 A108329
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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), Jun 30 2005
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