---
type: "datatype"
title: "integer64"
datatype: "integer64"
---
# integer64

- [Datatypes](/datatypes)
- [Definitions](/datatypes-definitions#integer64)
- [Examples](/datatypes-examples#integer64)
- [Mappings](/datatypes-mappings#integer64)
- [Profiles](/datatypes-profiles#integer64)

## Primitive Details
- **Definition**: A very large whole number
- **Comments**: Typically this is used for record counters (e.g. database keys)
- **XML Schema/Base**: `long`
- **JSON Type**: `string`
- **Regex**: `[0]|[-+]?[1-9][0-9]*`
- **Characteristics**: has-range
- **v3 Mapping**: `INT`
- **v2 Mapping**: `~NM/~SI`