A046484 Primes that are palindromic in bases 10 and 16.

2, 3, 5, 7, 11, 353, 787, 94049, 98689, 190080091, 3405684865043, 397922151229793, 1844238058789878508324481

Offset

1,1

Comments

Intersection of A002385 and A029732. - Michel Marcus, Jun 09 2013

Links

Table of n, a(n) for n=1..13.

Patrick De Geest, World!Of Palindromic Primes

Example

787_10 = 313_16. - Jon E. Schoenfield, Apr 10 2021

Prog

(PARI) ispal(p, b) = my(d=digits(p, b)); Vecrev(d) == d;
isok(p) = isprime(p) && ispal(p, 10) && ispal(p, 16); \\ Michel Marcus, Sep 20 2025

Crossrefs

Cf. A002385, A029731.

Primes that are palindromic in bases 10 and b: A046472 (b=2), A046473 (b=3), A046474 (b=4), A046475 (b=6), A046476 (b=7), A046477 (b=8), A046478 (b=9), A046479 (b=11), A046480 (b=12), A046481 (b=13), A046482 (b=14), A046483 (b=15).

Sequence in context: A046481 A082625 A030286 * A346168 A062888 A114835

Adjacent sequences: A046481 A046482 A046483 * A046485 A046486 A046487

Keyword

nonn,hard,base,more

Author

Patrick De Geest and Warut Roonguthai, Aug 15 1998

Extensions

a(13) from Max Alekseyev, Sep 14 2025

Status

approved