In which data type can I store a 128-bit data in c#? For example dataType bit128 = 340282366920938463463374607431768211455; what will be the datatype? >Solution : You should consider using BigInteger https://docs.microsoft.com/en-us/dotnet/api/system.numerics.biginteger?redirectedfrom=MSDN&view=net-6.0 The BigInteger type is an immutable type that represents an arbitrarily large integer whose value in theory has no upper or lower bounds." string… Read More 128 Bit Data Type Variable