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Search: id:A158069
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| A158069 |
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Primes p such that sum of digits of p - first digit of p = nonprime. |
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+0
2
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| 2, 3, 5, 7, 11, 19, 29, 31, 41, 59, 61, 71, 79, 89, 101, 109, 113, 127, 131, 137, 139, 151, 157, 163, 173, 179, 181, 191, 193, 197, 199, 227, 233, 239, 251, 257, 263, 269, 271, 277, 281, 293, 313, 317, 331, 337, 353, 359, 373, 379, 397, 401, 409, 419, 431, 433
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Nonprime digits are 0, 1, 4, 6, 8 or 9.
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MAPLE
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2(2-2=0), 3(3-3=0), 5(5-5=0), 7(7-7=0), 11(1+1-1=0), 19(1+9-1=9), 29(2+9-2)=9), 31(3+1-3=1)
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CROSSREFS
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Cf. A000040, A141468.
Sequence in context: A059878 A105017 A083771 this_sequence A039726 A115617 A003064
Adjacent sequences: A158066 A158067 A158068 this_sequence A158070 A158071 A158072
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KEYWORD
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nonn
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AUTHOR
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Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Mar 12 2009
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EXTENSIONS
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378 and 383 removed by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 17 2009
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