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Search: id:A057876
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| A057876 |
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Primes p with the following property: let d_1, d_2, ... be the distinct digits occurring in the decimal expansion of p. Then for each d_i all the numbers obtained by dropping all the digits d_i from p (excluding those beginning with 0) are primes. |
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+0
9
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| 23, 37, 53, 73, 113, 131, 137, 151, 173, 179, 197, 211, 311, 317, 431, 617, 719, 1531, 1831, 1997, 2113, 2131, 2237, 2273, 2297, 2311, 2797, 3137, 3371, 4337, 4373, 4733, 4919, 6173, 7297, 7331, 7573, 7873, 8191, 8311, 8831, 8837, 12239, 16673, 19531
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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1531 gives primes 53, 131 and 151 after dropping digits 1, 5 and 3.
A larger example 1210778071 gives primes 12177871, 2077807, 110778071, 1210801 and 121077071 after dropping digits 0, 1, 2, 7 and 8.
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CROSSREFS
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Cf. A057877-A057883, A051362, A034302-A034305.
Sequence in context: A153740 A055114 A063643 this_sequence A051362 A034302 A057878
Adjacent sequences: A057873 A057874 A057875 this_sequence A057877 A057878 A057879
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KEYWORD
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nonn,base
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com), Oct 15 2000.
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