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Maximusquadrillion is equal to $$10^{10^{15}}$$, or 1 followed by 1,000,000,000,000,000 zeroes. The term was coined by Yottatron as a continuation to Maximusmillion, Maximusbillion, and Maximustrillion.[1]

## ApproximationsEdit

Notation Lower bound Upper bound
Scientific notation $$1\times10^{1\,000\,000\,000\,000\,000}$$
Arrow notation $$10\uparrow10\uparrow15$$
Down-arrow notation $$10\downarrow\downarrow16$$
Steinhaus-Moser Notation 12[3][3] 13[3][3]
Copy notation 9[9[15]] 1[10[8]]
Chained arrow notation $$10→(10→15)$$
H* function H(333H(3)) H(334H(3))
Taro's multivariable Ackermann function A(3,A(3,48)) A(3,A(3,49))
Pound-Star Notation #*((1))*(38)*4 #*((1))*(39)*4
BEAF {10,{10,15}}
Hyper-E notation E15#2
Bashicu matrix system (0)(1)[48] (0)(1)[49]
Hyperfactorial array notation (16!)! (17!)!
Fast-growing hierarchy $$f_2(f_2(46))$$ $$f_2(f_2(47))$$
Hardy hierarchy $$H_{\omega^22}(46)$$ $$H_{\omega^22}(47)$$
Slow-growing hierarchy $$g_{\omega^{\omega^{\omega+5}}}(10)$$

## Sources Edit

1. Yottatron's custom huge numbers