>>2886851582% is fine, but its annoying IV to have (especially if you've got a 15 attack one) because his CP from levels (your level) 23 - 29 will sit just below the 100 mark (assuming you have him maxed out)
level 23 - 2399
level 24 - 2497
level 25 - 2595
level 26 - 2693
level 27 - 2791
level 28 - 2889
level 29 - 2963
level 30 - 3012
if it has 86.7% IVs it sits just above the 100 mark for those levels, but still needs you to get level 30 to break 3k anyway
might not be exactly the same for yours, so work yours out before you do it if thats a big enough factor for you
