Thread: theory on Mersenne primes ? View Single Post
2010-11-12, 20:22   #46
science_man_88

"Forget I exist"
Jul 2009
Dumbassville

26·131 Posts

Quote:
 Originally Posted by CRGreathouse If you want us to comment on more than just this case, you'll have to give us more information. If not, that's cool too.
Code:
 (11:39) gp > sumdigits(47)+sumdigits(178481)
%69 = 4
(16:19) gp > sumdigits(47*178481)
%70 = 4
in this case it works without the outer sumdigits in the first expression because both sumdigits are below 5 so it can't add up above 9.