Try wrapping each of these in BigInt. Example: factorial(BigInt(1000)) Julia defaults to what is fast on your machine. If you want to use BigInt you can do so

Try wrapping each of these in BigInt. Example: factorial(BigInt(1000)) Julia defaults to what is fast on your machine. If you want to use BigInt you can do so but it doesn't do so by default. You can also use 128bit integers in Julia. Example: rand(Int128, 10)