Intel® Fortran Compiler 17.0 Developer Guide and Reference

INTEGER(KIND=8) Representation

INTEGER(8) values range from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 and are stored in 8 contiguous bytes, as shown below.

INTEGER(8) Data Representation
INTEGER(8) Data Representation

Integers are stored in a two's complement representation.