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A trequadragintillion or tresquadragintillion is equal to $$10^{132}$$ in the short scale, or $$10^{258}$$ in the long scale. Tresquadragintillion is a name by Conway and Guy's naming system,[1][2][3] and trequadragintillion is a name adapted from the Conway's system.[4]

In the long scale which is commonly used in France and Germany, $$10^{132}$$ is called duovigintillion.

## Approximations

For short scale:

Notation Lower bound Upper bound
Scientific notation $$1\times10^{132}$$
Arrow notation $$10\uparrow132$$
Steinhaus-Moser Notation 71[3] 72[3]
Copy notation 9[132] 1[133]
Taro's multivariable Ackermann function A(3,435) A(3,436)
Pound-Star Notation #*(13,11,8,6,10,4,5,4)*9 #*(14,11,8,6,10,4,5,4)*9
BEAF {10,132}
Hyper-E notation E132
Bashicu matrix system (0)(0)(0)(0)(0)[13335] (0)(0)(0)(0)(0)[13336]
Hyperfactorial array notation 86! 87!
Fast-growing hierarchy $$f_2(429)$$ $$f_2(430)$$
Hardy hierarchy $$H_{\omega^2}(429)$$ $$H_{\omega^2}(430)$$
Slow-growing hierarchy $$g_{\omega^{\omega^2+\omega3+2}}(10)$$

For long scale:

Notation Lower bound Upper bound
Scientific notation $$1\times10^{258}$$
Arrow notation $$10\uparrow258$$
Steinhaus-Moser Notation 123[3] 124[3]
Copy notation 9[258] 1[259]
Taro's multivariable Ackermann function A(3,854) A(3,855)
Pound-Star Notation #*((1658))*10 #*((1659))*10
BEAF {10,258}
Hyper-E notation E258
Bashicu matrix system (0)(0)(0)(0)(0)(0)[10746] (0)(0)(0)(0)(0)(0)[10747]
Hyperfactorial array notation 147! 148!
Fast-growing hierarchy $$f_2(847)$$ $$f_2(848)$$
Hardy hierarchy $$H_{\omega^2}(847)$$ $$H_{\omega^2}(848)$$
Slow-growing hierarchy $$g_{\omega^{\omega^22+\omega5+8}}(10)$$

## List of prefixed numbers derived from quadragintillion

Name Short scale Long scale