A136773 n! never ends in this many 0's in base 13.

13, 27, 41, 55, 69, 83, 97, 111, 125, 139, 153, 167, 181, 182, 196, 210, 224, 238, 252, 266, 280, 294, 308, 322, 336, 350, 364, 365, 379, 393, 407, 421, 435, 449, 463, 477, 491, 505, 519, 533, 547, 548, 562, 576, 590, 604, 618, 632, 646, 660, 674, 688, 702

Offset: 1

Author

Carl R. White, Jan 21 2008

Keywords

• base
• nonn

Links

• Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000142, A136763, A136699, A000966, A055938, A096346, A136767, A136768, A136769, A136770, A136771, A136772, A136774.

Programs

PARI

valp(n, p)=my(s); while(n\=p, s+=n); s
is(n)=my(t=(12*n-1)\13*13+13,s=valp(t,13)-n); while(s<0, s+=valuation(t+=13, 13)); s>0 \\ Charles R Greathouse IV, Oct 19 2016