dlang bignum example

gistfile1.d

import std.bigint;
import std.stdio;

BigInt bigPow(BigInt x, int n) {
  BigInt answer = 1;
  for (auto i = 0; i < n; i++) {
    answer *= x;
  }
  return answer;
}
  
void main() {
  writefln("2^1000: %s", bigPow(cast(BigInt)2, 1000));
}