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Search: id:A120825
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| A120825 |
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Primes with n consecutive digits ascending beginning with the digit seven. |
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+0
9
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OFFSET
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1,2
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COMMENT
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Digits are in ascending order beginning with 7 and after 9 comes 0.
The sequence "Primes with n consecutive digits descending beginning with the digit seven" has only two terms below 6001, namely 1 & 5 which represents the primes 7 & 76543.
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EXAMPLE
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15 is term since 789012345678901 is a prime.
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MATHEMATICA
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fQ[n_] := PrimeQ@ FromDigits@ Mod[6+Range@n, 10]; lst = {}; Do[ If[fQ@n, AppendTo[lst, n]; Print@n], {n, 5000}]; lst
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CROSSREFS
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Cf. A006055, A120819, A120820, A120821, A120822, A120823, A120824, A120826, A120827.
Sequence in context: A034539 A029609 A014274 this_sequence A149576 A149577 A149578
Adjacent sequences: A120822 A120823 A120824 this_sequence A120826 A120827 A120828
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KEYWORD
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base,bref,hard,nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 05 2006
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