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Search: id:A156753
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| A156753 |
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Primes where the largest digit is equal to the sum of all the other digits. |
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+0
1
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| 11, 101, 167, 211, 257, 347, 431, 523, 541, 617, 743, 761, 853, 1021, 1087, 1153, 1201, 1373, 1427, 1483, 1531, 1571, 1607, 1733, 1861, 2011, 2053, 2141, 2237, 2251, 2273, 2383, 2411, 2417, 2503, 2521, 2741, 2833, 2851, 3041, 3137, 3371, 3407, 3511, 3823
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Chris Caldwell, The First 1,000 Primes
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EXAMPLE
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1571 is a prime in which the largest digit is equal to the sum of all the other digits.
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MAPLE
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A054055 := proc(n) max(op(convert(n, base, 10))) ; end: A007953 := proc(n) add(d, d=convert(n, base, 10)) ; end: for n from 1 to 800 do p := ithprime(n) ; if 2*A054055(p) = A007953(p) then printf("%d, ", p) ; fi; od: [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 20 2009]
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CROSSREFS
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A000040
Sequence in context: A083144 A058411 A134462 this_sequence A118592 A156617 A089716
Adjacent sequences: A156750 A156751 A156752 this_sequence A156754 A156755 A156756
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KEYWORD
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nonn,base
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Feb 14 2009
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EXTENSIONS
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11 added in front and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 20 2009
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