id:A117835 - OEIS Search Results

Search: id:A117835

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Prime numbers for which the product of the digits is also a prime number.

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1

2, 3, 5, 7, 11, 13, 17, 31, 71, 113, 131, 151, 211, 311, 1117, 1151, 1171, 1511, 2111, 11113, 11117, 11131, 11171, 11311, 111121, 111211, 112111, 113111, 131111, 311111, 511111, 1111151, 1111211, 1111711, 1117111, 1171111 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`None of the numbers in the sequence can have digits 0,4,6,8 or 9. The digits are all 1's, or there is one digit 2,3,5 or 7 and all the others are 1's.`
	CROSSREFS	`Sequence in context: A068652 A003459 A118725 this_sequence A120639 A141263 A016114` `Adjacent sequences: A117832 A117833 A117834 this_sequence A117836 A117837 A117838`
	KEYWORD	`base,nonn`
	AUTHOR	`Luc Stevens (lms022(AT)yahoo.com), Apr 30 2006`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

AT&T Labs Research