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Primitolbiplex is equal to s(3,4,2,2) in strong array notation.[1] It can be represented in chained arrow notation as $$3\rightarrow3\rightarrow4\rightarrow2$$. In up arrow notation it is equal to $$3\uparrow\uparrow\cdots\uparrow\uparrow3$$ with primitolplex arrows.

## Etymology

The name of this number is based on the prefix "bi-" and the number "primitolplex".

## Approximations

Notation Approximation
BEAF $$\{3,4,1,2\}$$
Hyper-E notation $$\textrm E2\#\#27\#3$$
Chained arrow notation $$3\rightarrow3\rightarrow4\rightarrow2$$ (exact)
Hyperfactorial array notation $$((4!26)![1])![1]$$
Fast-growing hierarchy $$f_{\omega}(f_{\omega}(f_{28}(2)))$$
Hardy hierarchy $$H_{\omega^{\omega}3}(28)$$
Slow-growing hierarchy $$g_{\varphi(\varphi(\varphi(\omega^\omega,0),0),0)}(3)$$
@ notation $$3\uparrow^{3@3}3$$