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Search: id:A091897
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A091897 Numbers that remain prime or composite for all permutations of their digits. +0
2
2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 15, 17, 18, 21, 22, 24, 25, 26, 27, 28, 31, 33, 36, 37, 39, 40, 42, 44, 45, 46, 48, 49, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 71, 72, 73, 75, 77, 78, 79, 80, 81, 82, 84, 85, 86, 87, 88, 90, 93, 94, 96, 97, 99, 102, 105 (list; graph; listen)
OFFSET

1,1

COMMENT

Union of A003459 and A067012. The repdigit numbers (A010785) > 1 are also clearly a subsequence.

CROSSREFS

Cf. A003459 (absolute primes), A067012 ('absolute composites'), A091898 (complement of A091897), A010785 (repdigit numbers).

Sequence in context: A115661 A002244 A037173 this_sequence A055201 A072303 A081061

Adjacent sequences: A091894 A091895 A091896 this_sequence A091898 A091899 A091900

KEYWORD

base,nonn

AUTHOR

Rick L. Shepherd (rshepherd2(AT)hotmail.com), Feb 09 2004

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.


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