A046476 - OEIS

A046476

Primes that are palindromic in bases 7 and 10.

2, 3, 5, 16561, 9470749, 90750705709, 17797767519791576779771, 120852845282999282548258021, 96623707604964146940670732669

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..9.

Patrick De Geest, World!Of Palindromic Primes

EXAMPLE

16561_10 = 66166_7. - Jon E. Schoenfield, Apr 10 2021

MATHEMATICA

Parallelize[Select[Prime[Range[650000]], AllTrue[{#, IntegerDigits[#, 7]}, PalindromeQ]&]] (* The program generates the first five terms of the sequence. *) (* Harvey P. Dale, Aug 10 2026 *)

CROSSREFS

Intersection of A029975 and A002385.

Subsequence of primes of A029964.

Primes that are palindromic in bases 10 and b: A046472 (b=2), A046473 (b=3), A046474 (b=4), A046475 (b=6), A046477 (b=8), A046478 (b=9), A046479 (b=11), A046480 (b=12), A046481 (b=13), A046482 (b=14), A046483 (b=15), A046484 (b=16).

Sequence in context: A089678 A079014 A072712 * A263429 A175309 A357323

Adjacent sequences: A046473 A046474 A046475 * A046477 A046478 A046479

KEYWORD

nonn,hard,base,more

AUTHOR

Patrick De Geest, Aug 15 1998

EXTENSIONS

a(7)-a(9) from Max Alekseyev, Nov 11 2025

STATUS

approved