Syntax	An explicitIntegerConstant is a sequence of one or more decimal digits (0 to 9) optionally preceded by a plus or minus sign. This is an alternate form that specifies a number base (such as base 2 or base 16).
Example	In the following, the explicit integer constants are 0, 115 and 5. var count : int := 0 const height := 115 … count := height - 5
Details	In current implementations of Turing, the range of the int (integer) type is from -2147483647 to 2147483647. In other words, the maximum size of integer is 2**31 - 1. This is the range that fits into four bytes, with one pattern left over (the largest negative 4-byte number) to represent the uninitialized value. See maxint. Values can be written in base 2 or 16 or any other base in the range 2 to 36 (36 because there are 10 digits and 26 letters). This form begins with the base, such as 16, then #, and then the value written in that base, for example, 16#A has the value 10. The letters a, b, c … represent the digit values 10, 11, 12 … Capital letters A, B, C … can be used instead of lower case. Here are some examples.   2#1     = 1     (Base 2)   2#11     = 3     (Base 2)   16#a     = 10     (Base 16)   16#FF     = 255     (Base 16)   16#FFFF   = 32767   (Base 16)   8#10     = 8     (Base 8) Here is an example of using these: const maxnat1 := 16#FF % Largest 1-byte natural number const maxint2 := 16#7FFF % Largest 2-byte integer You should be careful to avoid confusion about patterns such as 16#FFFF. It is tempting to think that this is the value 1, because the bit pattern (2-byte two's complement internal representation) for 1 is the same as the bit pattern for 16#FFFF = 32767. However, the value (as opposed to the internal representation) of 1 and 32767 are different.
See also	int, maxint (the largest integer value), nat (positive values only) and intn (n-byte integers). See also intstr and natstr which convert integer and natural number values to corresponding character strings in any base, for example intstr (4, 0, 2) = "100".