The CP formula is different for a raid boss compared to ordinary pokemon.
CP = (BaseAtt + 15) * sqrt((BaseDef + 15) * X) / 10
where X = 600/1800/3000/7500/12500 depending on raid level
Reference: https://www.reddit.com/r/pokebattler/comments/6jvzqm/motivation_for_flat_600150030007500_hp/
(That post mentions a HP of 1500 for a tier 2 boss but it has been buffed after that post to 1800.)
https://www.reddit.com/r/pokebattler/comments/6k03g0/info_sent_by_server/
Raid Boss CP Multiplier?
I was looking around at damage breakpoints and such, and came across the google doc on the solo T3 Raid Boss page
https://docs.google.com/spreadsheets/d/1biaUoyriPgwS9sG4AbpOoyiZsnxBWzkm8xDPel4cGy4/copy
I was wondering how the T1-T5 CpM values of 0.61, 0.67, 0.73, 0.79, and 0.79 were determined?
Up until now, I was under the impression that ALL Raid Bosses have a CpM of 1.0. T1-T5 Bosses have a set HP of 600, 1800, 3000, 7500, and 12500, respectively. Using these values and assuming Raid Boss IVs of 15 then give the correct Raid Boss CP level using the normal CP formula floor[(Att * sqrt(Def * HP) * CpM^2)/10].
If you take the aforementioned CpMs with the pokemons' base Att and Def stats with no extra from IVs, how on earth do you calculate their CPs?
Answers
That's the exact same formula as used for normal pokemon assuming a CpM of 1.0. However, you have X for HP, where the typical formula you see for CP uses sqrt(CpM * (BaseSta + StaIV)), which turns out to be how they determine HP ( HP = floor(sqrt(CpM) * (BaseSta + StaIV))).
Where did the CpM values come from in that spreadsheet?