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A180529
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Primes that become a different prime under the mapping 1 <=> 6.
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1
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17, 67, 107, 163, 167, 173, 317, 367, 607, 613, 617, 673, 719, 769, 1153, 1213, 1229, 1277, 1367, 1373, 1427, 1553, 1613, 1663, 1697, 1699, 1709, 1733, 1823, 1907, 1949, 1997, 2113, 2417, 2467, 2663, 3137, 3163, 3167, 3413, 3463, 3613, 3617, 3637, 3719
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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fQ[n_] := Block[{id = IntegerDigits@n}, (MemberQ[id, 1] || MemberQ[id, 6]) && PrimeQ[ FromDigits[ id /. {1 -> 6, 6 -> 1}] ]]; Select[ Prime@ Range@ 550, fQ]
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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STATUS
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approved
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