>[!tldr] Virtual page number (VPN) >When using [[Paging system|paging]] the [[Virtual memory|virtual memory]] is broken down into [[Memory page|pages]] each of these is index from 0 to the maximum memory that [[Process|process]] has. The *virtual page number* is the index of a particular [[Memory page|page]] in this address space. This along with an offset into the page determine an exact location of a [[Byte|byte]] of data.