• Rust

let a = 3.to_bigint().unwrap();
let x = num::pow(a, 247);

• C#

var x = BigInteger.Pow(3, 247);

• D

BigInt x = BigInt(3);
x ^^= 247;

• Dart

var x = pow(3, 247);

• Elixir

x = :math.pow(3, 247)

• Go

x := new(big.Int)
x.Exp(big.NewInt(3), big.NewInt(247), nil)

• Haskell

x :: Integer
x = 3^247

• JS

let x = 3n ** 247n;

• Java

BigInteger x = new BigInteger("3", 10).pow(247);

• Java

BigInteger x = new BigInteger("3").pow(247);

• Lisp

(setf x (expt 3 247))

• PHP

$x = gmp_pow(3, 247);
echo gmp_strval($x);

• Pascal

var
  X: TValue;
begin
  X := Exp(3, 247);
end.

• Perl

$x = 3 ** 247;

• Python

x = 3 ** 247

• Ruby

x = 3 ** 247

• Scheme

(define x (expt 3 247))