The same way you get through Prestige levels 1 - 14. By leveling up to Level 50.
15th prestige
51egitserp
Yes,you need to get level 50 15 times and you should be 15th prestige.
sorry but no
you unlock gold camo for your gun and your one prestige away from 15th prestige
51egitserp
51egitserp
I believe it is 15 prestige Backwards not sure tho hope this helps
51EGITSERP
Yes.
Yes code is 15EGITSERP
no