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Megafugaeight is equal to $$8\uparrow\uparrow8$$ or 8 tetrated to 8 or 8 pentated to 2.[1] It is approximately equal to $$E15,151,336\#6$$ in Hyper-E notation.

The name is formed by adding the megafuga- prefix to 8.

## Approximations in other notations

 Scientific notation $$10^{10^{10^{10^{10^{5.431653 \times 10^{15,151,335}}}}}}$$ Up-arrow notation $$8 \uparrow\uparrow 8$$, $$8 \uparrow\uparrow\uparrow 2$$ (both exact) BEAF $$\{8,8,2\}$$, $$\{8,2,3\}$$ (both exact) Hyper-E notation $$E(8)1\#8$$ (exact) Fast-growing hierarchy $$f^{7}_{2}(21)$$ Slow-growing hierarchy $$g_{\varepsilon_{0}}(8)$$ (exact) Hardy hierarchy $$H_{\omega^{2}7}(21)$$

## Sources

1. Saibian, Sbiis. The Fz, The Fuga & The Megafuga. Retrieved 2017-03-10.