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A180528
Primes that become a different prime under the mapping 1 <=> 5.
1
13, 19, 53, 59, 103, 109, 163, 193, 199, 313, 353, 503, 509, 563, 593, 599, 613, 619, 653, 659, 1009, 1019, 1039, 1087, 1103, 1117, 1163, 1237, 1279, 1297, 1303, 1399, 1453, 1459, 1483, 1553, 1559, 1567, 1579, 1597, 1613, 1619, 1669, 1693, 1783, 1867
OFFSET
1,1
LINKS
Index to Primes, Primes that become a different prime under some mapping.
MATHEMATICA
fQ[n_] := Block[{id = IntegerDigits@n}, (MemberQ[id, 1] || MemberQ[id, 5]) && PrimeQ[ FromDigits[ id /. {1 -> 5, 5 -> 1}] ]]; Select[ Prime@ Range@ 300, fQ]
CROSSREFS
KEYWORD
base,nonn
AUTHOR
STATUS
approved