golang maximum length for numbers

package main

import (
    "fmt"
    "math"
)

func main() {
    var maxInt int64 = math.MaxInt64
    var maxUint uint64 = math.MaxUint64

    fmt.Printf("Maximum int64 value: %d\n", maxInt)
    fmt.Printf("Maximum uint64 value: %d\n", maxUint)
}