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Search: id:A047791
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| A047791 |
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Numbers n such that n plus digit sum of n (A007953) equals a prime. |
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+0
15
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| 1, 10, 11, 13, 14, 16, 19, 32, 34, 35, 37, 52, 53, 56, 58, 59, 71, 73, 76, 91, 92, 94, 95, 97, 100, 101, 103, 104, 106, 122, 124, 127, 128, 142, 143, 146, 149, 160, 163, 166, 167, 181, 182, 184, 185, 215, 217, 218, 232, 233, 238, 250, 253, 256, 257, 271, 272
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Complement of A107743.
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EXAMPLE
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Digit sum of 13 = 1 + 3 = 4 -> 13 + 4 = 17 is prime.
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MAPLE
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P:=proc(n) local i, j, k, w; for i from 1 by 1 to n do w:=0; k:=i; j:=k; while k>0 do w:=w+k-(trunc(k/10)*10); k:=trunc(k/10); od; if isprime(j+w) then print(j); fi; od; end: P(1000); [From Paolo P. Lava (ppl(AT)spl.at), Mar 02 2009]
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CROSSREFS
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Cf. A006378, A107740.
Sequence in context: A167178 A077677 A107741 this_sequence A093679 A153194 A106439
Adjacent sequences: A047788 A047789 A047790 this_sequence A047792 A047793 A047794
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KEYWORD
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base,easy,nonn
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AUTHOR
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G. L. Honaker, Jr. (honak3r(AT)gmail.com)
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EXTENSIONS
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More terms from Larry Reeves (larryr(AT)acm.org), Nov 16 2000
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