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A180526
Primes that become a different prime under the mapping 1 <=> 3.
1
13, 17, 31, 37, 41, 43, 71, 73, 107, 113, 131, 137, 149, 151, 167, 179, 181, 197, 211, 233, 281, 283, 307, 313, 317, 331, 349, 353, 367, 379, 383, 397, 419, 439, 461, 463, 521, 523, 613, 631, 641, 643, 719, 739, 821, 823, 881, 883, 1021, 1033, 1039, 1049
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, 3]) && PrimeQ[ FromDigits[ id /. {1 -> 3, 3 -> 1}] ]]; Select[ Prime@ Range@ 300, fQ]
CROSSREFS
KEYWORD
base,nonn
AUTHOR
STATUS
approved