Season Ranking System XP Requirements

I bought Halo MCC on Steam and I started playing multiplayer. How many points do we need to get the highest rank (prestige) Tier 1?

According to the wiki here is all progression ranks :

I'm not talking about this Rank system that only concerns Ranked game :

Solution 1:

According to a user here, it takes around 1.95 Million EXP to prestige, as there are 10 full tiers, it will probably be around 19.5-20 million total EXP to get to the Tier 1 final rank.

I can't find the source currently but I remember reading that 343i said it would take efficient users around 4 months to get to max rank so this does seem around the correct pace.