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A180551
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Primes that become a different prime under the mapping 5 <=> 6.
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1
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157, 167, 457, 467, 541, 547, 563, 569, 577, 641, 647, 653, 659, 677, 751, 761, 853, 863, 1051, 1061, 1153, 1163, 1553, 1559, 1567, 1597, 1657, 1663, 1669, 1697, 2053, 2063, 2521, 2593, 2621, 2693, 2851, 2861, 2953, 2963, 3457, 3467, 3517, 3571, 3617
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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, 5] || MemberQ[id, 6]) && PrimeQ[ FromDigits[ id /. {5 -> 6, 6 -> 5}] ]]; Select[ Prime@ Range@ 510, 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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