Femtemegillion is equal to \(10^{3\times10^{15,000,000} + 3}\).[1] It is defined using Sbiis Saibian's generalization of Jonathan Bowers' -illion system.
Approximations[]
| Notation | Approximation |
|---|---|
| Scientific notation | \(1 \times 10^{3\times10^{15,000,000} + 3}\) (exact) |
| Arrow notation | \(10 \uparrow (3\times10\uparrow{15,000,000} + 3)\) (exact) |