A136187 - OEIS

A136187

Primes whose decimal, binary and binary-decimal reversals are all prime.

3, 5, 7, 11, 13, 17, 31, 71, 73, 107, 113, 313, 701, 727, 739, 757, 797, 941, 1033, 1153, 1193, 1453, 1487, 1619, 1831, 1879, 1949, 3019, 3343, 3389, 3511, 3527, 3643, 3803, 3851, 9001, 9013, 9173, 9403, 9439, 9491, 9497, 9521, 9533, 9769, 10151, 10159

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..47.

EXAMPLE

113 = 1110001 base 2, reverse the sequence of ones and zeros: 1000111 base 2 = 71. 113, 311, 71 and 17 are all prime.

CROSSREFS

Cf. A007500, A074832.

Sequence in context: A335120 A153601 A153602 * A333207 A328489 A130122

Adjacent sequences: A136184 A136185 A136186 * A136188 A136189 A136190

KEYWORD

base,nonn

AUTHOR

Harry J. Smith, Dec 19 2007

STATUS

approved