The quadragesimal-googol is equal to 40100 ~ 1.606*10160.[1] The term was coined by Aarex Tiaokhiao.

Approximations Edit

Notation Lower bound Upper bound
Scientific notation \(1.606\times10^{160}\) \(1.607\times10^{160}\)
Arrow notation \(40\uparrow100\)
Steinhaus-Moser Notation 83[3] 84[3]
Copy notation 1[161] 2[161]
Taro's multivariable Ackermann function A(3,529) A(3,530)
Pound-Star Notation #*((3))*9 #*((4))*9
BEAF {40,100}
Hyper-E notation E[40]100
Hyperfactorial array notation 101! 102!
Fast-growing hierarchy \(f_2(523)\) \(f_2(524)\)
Hardy hierarchy \(H_{\omega^2}(523)\) \(H_{\omega^2}(524)\)
Slow-growing hierarchy \(g_{\omega^{\omega2+20}}(40)\)


  1. Part 1 (LAN) - Aarex Googology