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Visualization of primibol using up-arrow notation

The primibol is equal to s(3,2,3,2) in strong array notation.[1] It can be represented in chained arrow notation as \(3\rightarrow3\rightarrow2\rightarrow3\).


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


Notation Approximation
BEAF \(\{3,27,1,2\}\)
Hyper-E notation \(E2\#\#27\#26\)
Chained arrow notation \(3\rightarrow3\rightarrow2\rightarrow3\) (exact)
Hyperfactorial array notation \(26![2]\)
Fast-growing hierarchy \(f_{\omega+1}(26)\)
Hardy hierarchy \(H_{\omega^{\omega+1}}(26)\)
Slow-growing hierarchy \(g_{\Gamma_0}(27)\)


See also

Hyp cos' linear strong array notation numbers | exAN numbers
3-entry series
Tribo group: tribo · tetbo · pentbo · hexabo
Trientri group: trientri · tettro · pentro · hextro
Trientet group: triteto · trientet · penteto · hexteto
Trienpent group: tripeno · tetpeno · trienpent · hexpeno
Trienhex group: trihexo · tethexo · penhexo · trienhex