Most developers when requiring a integer type use the
int type and go about their business.
int you can use is 2,147,483,647, and the smallest is -2,147,483,647.
int is a 32 bit type
This is a very big range -
Int is a signed type - has provisions for
There is an unsigned version -
This one has a minimum of 0 and a maximum of 4,294,967,295
You can establish the minimum of the
int (or any numeric type for that matter) as follows:
Similarly, for the maximum value
In the context of storage - for instance if using Entity Framework - the size of the type can start to matter when you are storing very large numbers of values.
For more efficient storage (depending on your use case) you might find it more prudent to default to alternative types.
There are also types bigger than the 32 bit
integer (a consideration, for example, when specifying integral primary keys in Entity Framework)
There are some integral types whose size depends on the underlying platform - native integer (
nint), and native unsigned integer (
The minimum, maximum and size depends on the underlying platform - so either 32 or 64 bits. You should only use these if you know what you are doing.
Finally, for very big numbers of arbitrary size, there is a specialized type for these - System.Numerics.BigInteger