Great tritri is equal to 3 ↑↑↑ 4, or 3 pentated to 4.[1] This number was coined by Unknown95387.

Approximations

Notation Approximation
BEAF {3,4,3} (exact)
Steinhaus-Moser Notation 3[5]
Hyper-E notation E[3]1#1#4 (exact)
Fast-growing hierarchy \(f_\omega(4)\)
Hardy hierarchy \(H_{\omega^{\omega}}(4)\)
Slow-growing hierarchy \(g_{\zeta_0}(4)\)

References

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