A046475 Primes that are palindromic in bases 6 and 10.

2, 3, 5, 7, 191, 108151801, 11271517211, 155259838952551

Offset

1,1

Comments

(The only primes that are palindromic in bases 5 and 10 that have been found are the trivial solutions 2 and 3.)

Links

Table of n, a(n) for n=1..8.

P. De Geest, World!Of Palindromic Primes

Example

191_10 = 515_6. - Jon E. Schoenfield, Apr 10 2021

Mathematica

pal6Q[p_]:=With[{idn6=IntegerDigits[p, 6]}, PalindromeQ[p]&&idn6==Reverse[idn6]]; Select[Prime[Range[63*10^5]], pal6Q] (* The program generates the first six terms of the sequence. *) (* Harvey P. Dale, Dec 04 2024 *)

Crossrefs

Cf. A002385, A029963.

Sequence in context: A069803 A083184 A046478 * A029978 A360986 A122764

Adjacent sequences: A046472 A046473 A046474 * A046476 A046477 A046478

Keyword

nonn,hard,base,changed

Author

Patrick De Geest, Aug 15 1998

Status

approved