format

double-int - an integer that can be stored in an IEEE 754 double-precision number without loss of precision

JSON Data Type: number.

The double-int format represents an integer that can be stored in an IEEE 754 double-precision number without loss of precision. The range of values is -(2⁵³)+1 to (2⁵³)-1.

This format is useful for systems that need to support languages (such as JavaScript) that store all numeric values as IEEE 754 double-precision numbers.