The list primarily consists of music releases but also includes promotional graphics, film, etc.
Special numbers were reserved for significant Factory output.
For instance, albums by Joy Division and New Order are typically cataloged under multiples of 25; the sole exceptions to this are two Joy Division albums: Unknown Pleasures (FACT 10) and Still (FACT 40).
The final recording issued by Factory, Happy Mondays' 1992 single "Sunshine & Love", bears the number FAC 372; nevertheless, a handful of recordings issued earlier (sometimes years earlier) have higher catalogue numbers.
The last digit of the number may designate the following (but inconsistencies abound): 1 - Factory Corporate, 2 - Happy Mondays (singles), 3 - Joy Division / New Order (singles), 4 - Durutti Column, 6 - Factory Classical.