// *** in version 6.0: ***
//128-bit integers moved into
//the standard library
let big = Int128.max
//big is 170141183460469231731687303715884105727

let unsigned: UInt128 = 1 << 100
//unsigned is 1267650600228229401496703205376

print("big is \(big)")
print("unsigned is \(unsigned)")