API Reference > bentleyjs-core > Ids > Id64 > Id64.Uint32Pair Id64.Uint32Pair Interface Represents an unsigned 64-bit integer as a pair of unsigned 32-bit integers. see Id64.getUint32Pair see Id64.isValidUint32Pair Properties Name Type Description lower number The lower 4 bytes of the 64-bit integer. upper number The upper 4 bytes of the 64-bit integer. Defined in core/bentley/src/Id.ts Line 277 Last Updated: 29 November, 2022