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Greegolenna is equal to E100##100##100##100##100##100##100##100##100#100#100 using Extended Hyper-E notation.[1] The term was coined by Sbiis Saibian. This number belongs to the gugolthra regiment.

Etymology

The name of this number is based on the numbers "greegold" and "gugolenna".

Approximations in other notations

Notation Approximation
Chained arrow notation $$100 \rightarrow 100 \rightarrow 100 \rightarrow 100 \rightarrow 100 \rightarrow 100 \rightarrow 100 \rightarrow 100 \rightarrow 100 \rightarrow 101 \rightarrow 3$$
BEAF $$\{100,101,2,9\}$$
Fast-growing hierarchy $$f_{\omega 8+2}(100)$$
Hardy hierarchy $$H_{\omega^{\omega 8+2}}(100)$$
Slow-growing hierarchy (using this system of fundamental sequences) $$g_{\varphi(8,1,0)}(100)$$