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A260829
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Primes that contain only the digits (5, 6, 7).
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2
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5, 7, 67, 557, 577, 677, 757, 5557, 5657, 6577, 7577, 7757, 55667, 56767, 57557, 57667, 65557, 65657, 65677, 65777, 67567, 67577, 67757, 67777, 75557, 75577, 75767, 76667, 76757, 76777, 77557, 555557, 555677, 555767, 557567, 565567, 565667, 566557, 566567
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OFFSET
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1,1
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COMMENTS
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LINKS
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MATHEMATICA
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Select[Prime[Range[2 10^5]], Complement[IntegerDigits[#], {5, 6, 7}] == {} &]
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PROG
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(Magma) [p: p in PrimesUpTo(2*10^6) | Set(Intseq(p)) subset [5, 6, 7]];
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CROSSREFS
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Cf. similar sequences listed in A260827.
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KEYWORD
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nonn,easy,base
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AUTHOR
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STATUS
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approved
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