Big number in C++

Question

I am trying to place a big number in a C++ variable. The number is 600851475143

I tried unsigned long long int but got an error saying it the constant was too big.

Answer 1

Try this one. Basically you can have your own custom class which uses linked list to store the number of infinite size. ( RAM is the restriction ) Try this one https://mattmccutchen.net/bigint/