Windows Process ID

Each process is identified by a numberical (integer value), named ID, process id, process identifier or simply PID.

These process IDs are always multiple of 4 because they (somehow) relate to handles in the Kernel which themselves are always multiple of 4.

This statement can be «verified» with the following PowerShell pipeline:

get-process | where-object { [Math]::Round($_.id /4 ) -ne ($_.id/4) }