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Megafugaseven is equal to 7↑↑7, or 7 tetrated to 7. It is approximately equal to $$10^{10^{10^{10^{10^{695,975}}}}}$$ or $$E695,975\#5$$ in Hyper-E notation.

The name is formed by adding the megafuga- prefix to 7.

## Approximation in other notations

Notations Approximations
Chained arrow notation $$7 \rightarrow 7 \rightarrow 2$$ (exact)
BEAF $$\{7,7,2\}$$ (exact)
Hyperfactorial array notation $$((((147,041!)!)!)!)!$$
Fast-growing hierarchy $$f_{3} (9)$$
Hardy hierarchy $$H_{\omega^3} (7)$$
Slow-growing hierarchy $$g_{\varepsilon_{0}} (7)$$ (exact)