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A139749 Numbers n such that d_1^r + ... + d_r^1 is a prime number, where d_i are the digits of n (n = concatenation of d_1, ..., d_r). 3
2, 3, 5, 7, 11, 12, 14, 16, 21, 23, 27, 29, 32, 34, 38, 41, 43, 47, 54, 56, 61, 65, 67, 74, 83, 87, 89, 92, 98, 101, 102, 104, 106, 110, 111, 113, 115, 119, 120, 122, 126, 128, 131, 133, 137, 139, 140, 142, 146, 153, 155, 160, 164, 166, 173, 179, 182, 186, 188, 191 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Cf. A139751.

Sequence in context: A028835 A028834 A139750 * A178357 A205667 A165132

Adjacent sequences:  A139746 A139747 A139748 * A139750 A139751 A139752

KEYWORD

base,easy,nonn,less

AUTHOR

Ctibor O. Zizka (ctibor.zizka(AT)seznam.cz), May 19 2008

EXTENSIONS

Edited and extended by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), May 21 2008

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Last modified February 17 13:09 EST 2012. Contains 206029 sequences.