Okay, someone seems to be filling in the info for Plus-Disk characters as they receive them, and said they would fill in the Level-Up modifier info if they knew how to calculate it.
Well, we have everything needed to find it out, but I haven't bothered to actually give an equation or something you would use to learn it. So, lets see here...
B x M = R
Base exp (for that level up) times the character's level-up Modifer=required EXP to level. Well, we only know R right off the bat, since the game tells us what that is. This means that R/M=B is true, so lets take advantage.
Now, by dividing R with M you get B, so we figure out B using a non-Plus character who is at the SAME LEVEL as the Plus-Disk one. For example, Reimu's required experience to level divided by .9 (Her modifier is 90, which means 0.90). The number you receive is the base exp for said level-up, you can now fill in B and R in the equation.
Lets see an example for Level 61. Reimu's required EXP to level is 42184. Divide by .9, which is her Level-Up Modifier (aka, 90). You get 46871.111111(etcetc), the base experience needed to reach level 62 from 61.
Minoriko is also level 61, and requires 41247 experience. Lets find out her Level-Up Modifier using the Base Experience for this level-up that we just discovered.
46871.11111(etc) x M = 41247
Yay, algebra time. I don't know what to do at this point and don't feel like figuring out because I'm lazy, so just divide 41247 by some number, go up or down to get closer and closer to the Base Experience until you obtain the correct number(Or as close as possible, then round the number). Multiply the number you found by 100, this is the character's level-up modifier. The answer to this equation is 88, by the way.
I wonder if anyone will understand what I just explained. Maybe if I had figured out the last part, it would have helped, but I'm stumped. If you don't understand, just get some Plus-Disk characters to the same level as a Non-Plus one, and tell me their required EXP to level so I can do the rest :V