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Search: id:A120820
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| A120820 |
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Primes with n consecutive digits ascending beginning with the digit two. |
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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 2 and after 9 comes 0.
The sequence "Primes with n consecutive digits descending beginning with the digit two" has only one term, 1 which represents the prime 2.
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EXAMPLE
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8 is a term since 23456789 is a prime.
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MATHEMATICA
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fQ[n_] := PrimeQ@ FromDigits@ Mod[1+Range@n, 10]; lst = {}; Do[ If[fQ@n, AppendTo[lst, n]; Print@n], {n, 10000}]; lst
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CROSSREFS
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Cf. A006055, A120819, A120821, A120822, A120823, A120824, A120825, A120826, A120827.
Sequence in context: A134054 A134086 A013175 this_sequence A134089 A136647 A052456
Adjacent sequences: A120817 A120818 A120819 this_sequence A120821 A120822 A120823
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KEYWORD
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base,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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