id:A020457 - OEIS Search Results

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A020457

Primes that contain digits 1 and 9 only.

+0
2

11, 19, 191, 199, 911, 919, 991, 1999, 9199, 11119, 19919, 19991, 91199, 99119, 99191, 99991, 111119, 111191, 111919, 119191, 191119, 191911, 191999, 199999, 911111, 919111, 991999, 999199, 1111991, 1191119, 1191191, 1191199, 1191991, 1199999 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Sequence in context: A089773 A048389 A163151 this_sequence A032370 A129908 A129909` `Adjacent sequences: A020454 A020455 A020456 this_sequence A020458 A020459 A020460`
	KEYWORD	`nonn,base`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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