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A117058 Palindromes for which the product of the digits is prime. +0
1
2, 3, 5, 7, 121, 131, 151, 171, 11211, 11311, 11511, 11711, 1112111, 1113111, 1115111, 1117111, 111121111, 111131111, 111151111, 111171111, 11111211111, 11111311111, 11111511111, 11111711111, 1111112111111, 1111113111111 (list; graph; listen)
OFFSET

1,1

EXAMPLE

11211 is in the sequence because (1) it is a palindrome and (2)the product of its digits 1*1*2*1*1=2 is a prime.

CROSSREFS

Cf. A002113.

Sequence in context: A119835 A076609 A117059 this_sequence A067173 A090718 A117703

Adjacent sequences: A117055 A117056 A117057 this_sequence A117059 A117060 A117061

KEYWORD

base,easy,nonn

AUTHOR

Luc Stevens (lms022(AT)yahoo.com), Apr 16 2006

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.


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