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Search: id:A103119
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| A103119 |
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Numbers n such that n0999 is prime. |
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+0
1
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| 7, 10, 23, 26, 29, 34, 41, 43, 47, 62, 73, 80, 89, 92, 97, 98, 100, 121, 124, 131, 142, 149, 155, 157, 173, 175, 181, 182, 191, 197, 202, 203, 218, 229, 230, 236, 241, 245, 250, 253, 262, 268, 272, 274, 275, 286, 289, 293, 295, 302, 311, 320, 323, 331, 335, 338
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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If n=7, then n0999 = 70999 (prime).
If n=41, then n0999 = 410999 (prime).
If n=80, then n0999 = 800999 (prime).
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MATHEMATICA
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fQ[n_] := PrimeQ[ FromDigits[ Join[ IntegerDigits[n], {0, 9, 9, 9}]]]; Select[ Range[ 349], fQ[ # ] &] (from Robert G. Wilson v Mar 26 2005)
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CROSSREFS
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Cf. A104153.
Adjacent sequences: A103116 A103117 A103118 this_sequence A103120 A103121 A103122
Sequence in context: A120312 A074377 A117618 this_sequence A054224 A134329 A064948
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KEYWORD
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base,nonn
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Mar 16 2005
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EXTENSIONS
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Edited and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Mar 26 2005
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