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A046501 Primes with multiplicative persistence value 1. +0
4
2, 3, 5, 7, 11, 13, 17, 19, 23, 31, 41, 61, 71, 101, 103, 107, 109, 113, 131, 151, 181, 191, 211, 241, 307, 311, 313, 331, 401, 409, 421, 503, 509, 601, 607, 701, 709, 809, 811, 907, 911, 1009, 1013, 1019, 1021, 1031, 1033, 1039, 1049, 1051, 1061, 1063 (list; graph; listen)
OFFSET

0,1

LINKS

Eric Weisstein's World of Mathematics, Multiplicative Persistence

EXAMPLE

181 -> 1 * 8 * 1 = 8; one digit in one step.

CROSSREFS

Cf. A046500, A046510.

Sequence in context: A128898 A006514 A086983 this_sequence A033875 A105581 A050264

Adjacent sequences: A046498 A046499 A046500 this_sequence A046502 A046503 A046504

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Sep 15 1998.

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


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