[Q] What is the meaning of "414"? topic

What is the meaning of "414"? I have seen this in several posts (example: [RECOVERY] [ROMs] ASUS Memo Pad HD 7 (me173x) [MT8125] [MULTILANG]) when the original info iappears to no longer there. This particular thread mentioned is of importance to me since I have a ME173x and very little is posted about it.