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 01262011, 08:43 PM #1
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 01262011, 09:07 PM #2Moderator
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Roughly speaking n(n+1) will have twice as many digits as n and the resulting exponential growth of the digit length of n! is going to be a problem sooner or later.
Perhaps some number theory is called for.
Some people make a distinction between digit sums and reduced digit sums (ie 456>15 vs 456>6): which do you mean?
[Edit] The question was to find the digit sum of 50000!Last edited by pbrockway2; 01262011 at 10:55 PM.
 01262011, 10:00 PM #3
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