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Search: id:A020455
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A020455 Primes that contain digits 1 and 7 only. +0
2
7, 11, 17, 71, 1117, 1171, 1777, 7177, 7717, 11117, 11171, 11177, 11717, 11777, 17117, 71171, 71711, 71777, 77171, 77711, 1111711, 1111771, 1117111, 1117117, 1117177, 1171111, 1171117, 1171771, 1177171, 1177711, 1177717, 1711117, 1717117, 1771177 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A097956 A094104 A167513 this_sequence A048215 A131192 A130570

Adjacent sequences: A020452 A020453 A020454 this_sequence A020456 A020457 A020458

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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