A035067 n! has a palindromic prime number of digits.

4, 5, 6, 8, 10, 14, 70, 86, 111, 116, 199, 368, 372, 419, 423, 3391, 4013, 4182, 4790, 5821, 8625, 8752, 9187, 10477, 10904, 18335, 18595, 18808, 18925, 19844, 20267, 23086, 23157, 23665, 24286, 205587, 219047, 228675, 230186, 238845, 250279, 251779, 256996

Offset

1,1

Links

Table of n, a(n) for n=1..43.

Index entries for sequences related to factorial numbers

Example

111! has 181 digits.

Crossrefs

Cf. A000142, A035068.

Sequence in context: A287358 A035065 A209722 * A027698 A047313 A030343

Adjacent sequences: A035064 A035065 A035066 * A035068 A035069 A035070

Keyword

nonn,hard,base

Author

Patrick De Geest, Nov 15 1998

Extensions

More terms from Frank Ellermann, May 30 2001

More terms from Sean A. Irvine, Sep 24 2020

Status

approved