Find the Sum of the Digits of 2^1000

3 posts · originally from https://geek.digit.in/community/threads/find-the-sum-of-the-digits-of-2-1000.94438/

215 = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26.

What is the sum of the digits of the number 2^1000?

Ripped off from Project Euler. Any solutions anyone?

Isn't it straightforward? Or are you looking for non-bruteforce methods. I don't know of a way if so.

Is a nice one-liner in most languages otherwise.

Edit: Guess you are wondering how to store such a large number? Using modulo (10) can help in that case. You need to understand a bit more of multiplication. Else just use BigNum/Etc

Modulo ? Can you elaborate on that?