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Hi!

Any idea, what is wrong with this code?

#include <stdio.h>
#include <limits.h>
#include <math.h>
#include <stdlib.h>
unsigned int digits(unsigned int n, unsigned int base)
{
return (unsigned int)(floor((log10(2*M_PI*n)/2+n*(log10(n)-log10(M_E)))/log10(base)+1e-9)+1);
}
unsigned int legendre ...

Hello!

Use unsigned long long int.

Hello!

Perhaps may help to you this sentence:

You know that no individual in that country lives for 100 or more years.