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Quadragintans is equal to [1,40] = 484840 = 4817,768,447,974,533,064,897,800,026,560,617,684,066,247,572,707,659,019,938,192,504,651,776 using PlantStar's notation.[1] The term was coined by PlantStar.

Approximations

Notation Lower bound Upper bound
Arrow notation \(48\uparrow48\uparrow40\)
Down-arrow notation \(48\downarrow\downarrow41\)
Steinhaus-Moser Notation 40[3][3] 41[3][3]
Copy notation 2[2[68]] 3[3[68]]
H* function H(9H(21)) H(10H(21))
Taro's multivariable Ackermann function A(3,A(3,222)) A(3,A(3,223))
Pound-Star Notation #*((1))*(7,0,2,0,2)*5 #*((1))*(0,1,2,0,2)*5
BEAF {48,{48,40}}
Hyper-E notation E[48]40#2
Hyper-E notation (decimal equivalent) E68#2 E69#2
Bashicu matrix system (0)(1)[14] (0)(1)[15]
Hyperfactorial array notation (50!)! (51!)!
Fast-growing hierarchy \(f_2(f_2(218))\) \(f_2(f_2(219))\)
Hardy hierarchy \(H_{\omega^22}(218)\) \(H_{\omega^22}(219)\)
Slow-growing hierarchy \(g_{\omega^{\omega^{40}}}(48)\)

Sources

See also

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