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DLang /

Working with big integers

See also std.bigint.

(1) big integers
def main():
    n = 2**256

    print(n)
import std.stdio;
import std.bigint; // BigInt
import std.conv; // to()

void main()
{
    BigInt n = BigInt(2) ^^ 256;

    writeln(n); // v1

    writeln(n.toDecimalString()); // v2

    writeln(n.to!string); // v3

    // ----------

    // you can create a big int. from a string too
    auto number = BigInt("80538738812075974");
}

Output: 

115792089237316195423570985008687907853269984665640564039457584007913129639936

Notes:

  • In D, performance is optimized for numbers below ~1000 decimal digits.
  • Interestingly, for very large numbers, Python performs much better.
  • For very large numbers, consider using the GMP library instead.
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Page last modified on 2025 July 08, 05:34