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A103188
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Numbers n such that n711 is prime.
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0
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2, 5, 10, 13, 26, 28, 38, 43, 44, 47, 49, 52, 55, 56, 58, 68, 71, 77, 85, 86, 91, 97, 98, 104, 110, 121, 125, 127, 131, 133, 136, 142, 143, 148, 149, 160, 167, 170, 176, 181, 182, 184, 185, 187, 188, 190, 197, 211, 218, 223, 224, 229, 232, 239, 241, 244, 245, 247, 257, 265
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| If n=2, then n711 = 2711 (prime).
If n=43, then n711 = 43711 (prime).
If n=58, then n711 = 58711 (prime).
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PROG
| (MAGMA) [ n: n in [1..700] | IsPrime(Seqint([1, 1, 7] cat Intseq(n))) ]; // From Vincenzo Librandi, Feb 03 2011
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CROSSREFS
| Cf. A103118.
Sequence in context: A018571 A064233 A051952 * A064392 A018296 A033316
Adjacent sequences: A103185 A103186 A103187 * A103189 A103190 A103191
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KEYWORD
| base,nonn
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AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Mar 18 2005
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