A341089 Powers of primes whose reversal in base 10 is also a power of prime.

1, 2, 3, 4, 5, 7, 8, 9, 11, 13, 16, 17, 23, 31, 32, 37, 61, 71, 73, 79, 97, 101, 107, 113, 121, 125, 128, 131, 149, 151, 157, 163, 167, 169, 179, 181, 191, 199, 311, 313, 337, 343, 347, 353, 359, 361, 373, 383, 389, 521, 701, 709, 727, 733, 739, 743, 751, 757

Offset

1,2

Comments

A subsequence of A000961 that contains A007500.

Links

Table of n, a(n) for n=1..58.

Example

16 = 2^4 and its reversal in base 10, 61, is prime, so 16 and 61 belong to this sequence.

Mathematica

Select[Range[800], AllTrue[{#, IntegerReverse[#]}, PrimeNu[#1] < 2 &] &] (* Amiram Eldar, Feb 15 2022 *)

Prog

(PARI) is(n) = omega(n)<=1 && omega(fromdigits(Vecrev(digits(n))))<=1

Crossrefs

Cf. A000961, A004086, A007500.

Sequence in context: A115919 A038701 A127072 * A056781 A079446 A322546

Adjacent sequences: A341086 A341087 A341088 * A341090 A341091 A341092

Keyword

nonn,base

Author

Rémy Sigrist, Feb 13 2022

Status

approved