2^256 = 115,792,089,237,316,195,423,570,985,008,687,907,853,269,984,665,640,564,039,457,584,007,913,129,639,935
function typeMax() public view returns (uint256 max, uint256 min) {
max = type(uint256).max;
min = type(uint256).min;
console.log("max is",max);
console.log("min is",min);
}
console.log:
max is 115792089237316195423570985008687907853269984665640564039457584007913129639935 min is 0