Ghigol is a number in the googol family, coined by substituting -hi- from the vowel sound of six. It was formerly known as simply gigol, without the silent H, until the name conflicted with the much larger number of Jonathan Bowers for g(6, 100, 10). The -h- infix came to be known as standing for "formerly high". It is equal to only g(2, 50, 6(50)) = g(2, 50, 300) = \(300^{50}\). It has only 124 digits.[1]

Its decimal representation is:

7178979876918525887702490000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Approximations

Notation Lower bound Upper bound
Scientific notation \(7.178\times10^{123}\) \(7.179\times10^{123}\)
Arrow notation \(300\uparrow50\)
Steinhaus-Moser Notation 67[3] 68[3]
Copy notation 6[124] 7[124]
Taro's multivariable Ackermann function A(3,408) A(3,409)
Pound-Star Notation #*(0,2,6,9,0,7,5,8)*8 #*(8,5,4,1,2,9,2)*11
BEAF {300,50}
Hyper-E notation E[300]50
Bashicu matrix system (0)(0)(0)(0)(0)[7421] (0)(0)(0)(0)(0)[7422]
Hyperfactorial array notation 82! 83!
Fast-growing hierarchy \(f_2(402)\) \(f_2(403)\)
Hardy hierarchy \(H_{\omega^2}(402)\) \(H_{\omega^2}(403)\)
Slow-growing hierarchy \(g_{\omega^{50}}(300)\)

Sources

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