A180526 Primes that become a different prime under the mapping 1 <=> 3.

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

Robert Price, Table of n, a(n) for n = 1..3634

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

Cf. A175770, A175791, A180517 thru A180559, A175789, A180560, A180561.

Sequence in context: A274506 A107159 A138375 * A161401 A225035 A344626

Adjacent sequences: A180523 A180524 A180525 * A180527 A180528 A180529

Keyword

base,nonn

Author

Zak Seidov and Robert G. Wilson v, Sep 09 2010

Status

approved