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A125001
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Non-insertable primes: primes with property that no matter where you insert (or prepend or append) a digit you get a composite number (except for prepending a zero).
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1
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369293, 3823867, 5364431, 5409259, 7904521, 8309369, 9387527, 9510341, 22038829, 27195601, 28653263, 38696543, 39091441, 39113161, 43744697, 45095839, 45937109, 48296921, 48694231, 49085093, 49106677, 50791927
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| David W. Wilson, Table of n, a(n) for n = 1..1000
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EXAMPLE
| 369293 is a member because all of 1369293, 2369293, 3369293, ..., 3069293, 3169293, ..., 3692930, ..., 3692939 are composite.
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CROSSREFS
| Sequence in context: A187437 A156115 A199496 * A172563 A172582 A172682
Adjacent sequences: A124998 A124999 A125000 * A125002 A125003 A125004
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KEYWORD
| nonn,base
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AUTHOR
| David W. Wilson (davidwwilson(AT)comcast.net), Jan 08 2007
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