NUMBER is a value gained via rebirthing that multiplies your Attack and Defense from Basic Training.
The NUMBER for the next rebirth will be the product of the following factors (which default to 1 if they are not yet unlocked):
| Factor | Calculation |
|---|---|
| current boss | 2^(bosses defeated this rebirth) - normal 1.5^(bosses defeated this rebirth) - evil 1.2^(bosses defeated this rebirth) - SADISTIC[1] |
| prior boss | 2^(bosses defeated last rebirth) - normal 1.5^(bosses defeated last rebirth) - evil 1.2^(bosses defeated last rebirth) - SADISTIC[1] |
| rebirth time factor | A multiplier that increases slowly over time. It has multipliers at 3, 4, 5, 7, 10, 12, 15, 30, and 60 minutes. It is less than 1 for rebirths under an hour. |
| prior rebirth time factor | The time factor for the last rebirth. |
| training level factor | Floor(1 + Attack Basic Training Levels / 10,000) |
| blood magic bonus | The amount of blood cast into the NUMBER spell this rebirth + 1. |
| NGU NUMBER Bonus | A factor that scales with both your Magic NGU Number level and the current rebirth's time factor. |
| Beard NUMBER Bonus | A factor based on your Reverse Hitler's current and permanent levels. |
| Yggdrasil NUMBER Bonus | A factor based on your Fruit of Numbers bonus, if activated this rebirth. |
| MacGuffin NUMBER Bonus | A factor based on your Number MacGuffin Fragment |
| Hacks NUMBER Bonus | A factor based on your Number Hack |
The prior rebirth's Blood Magic Bonus is displayed on the rebirth screen, but is not included in the calculation.