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Search: id:A068669
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| A068669 |
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Primes in which every substring is a prime or 1. |
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+0
2
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| 2, 3, 5, 7, 11, 13, 17, 23, 31, 37, 53, 71, 73, 113, 131, 137, 173, 311, 313, 317, 373, 1373, 3137
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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It is easy to see that this sequence is complete - the only potential 5-digit candidate 31373 is not prime. - Tanya Khovanova (tanyakh(AT)yahoo.com), Dec 09 2006
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EXAMPLE
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137 is a member as all the substrings, i.e. 1,3,7,13,37,137, are primes.
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CROSSREFS
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Cf. A012884.
Sequence in context: A036962 A160337 A012884 this_sequence A100553 A152245 A007693
Adjacent sequences: A068666 A068667 A068668 this_sequence A068670 A068671 A068672
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KEYWORD
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base,nonn,fini,full
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 02 2002
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