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A Bentaggoogol or Noventrigintacentillion is equal to \(10^{420}\) .[1]

ApproximationsEdit

Notation Lower bound Upper bound
Scientific notation \(1\times10^{420}\)
Arrow notation \(10\uparrow420\)
Steinhaus-Moser Notation 185[3] 186[3]
Copy notation 9[420] 1[421]
Taro's multivariable Ackermann function A(3,1392) A(3,1393)
Pound-Star Notation #*((39))*13 #*((40))*13
BEAF {10,420}
Hyper-E notation E420
Bashicu matrix system (0)(0)(0)(0)(0)(0)(0)[1910] (0)(0)(0)(0)(0)(0)(0)[1911]
Hyperfactorial array notation 219! 220!
Fast-growing hierarchy \(f_2(1\,384)\) \(f_2(1\,385)\)
Hardy hierarchy \(H_{\omega^2}(1\,384)\) \(H_{\omega^2}(1\,385)\)
Slow-growing hierarchy \(g_{\omega^{\omega^24+\omega2}}(10)\)

Sources Edit

  1. [1]

See also Edit