A sptdoocol dollars in 25 piles of 100 dollar bills, in comparison to the Empire State Building.

The sptdoocol or 17-noogol is equal to s(10,17) using strong array notation, or 1017 = 100,000,000,000,000,000. [1] The term was coined by Aarex Tiaokhiao.

This number is called a shankh in the indian counting system.[2]

As a banknote denomination

Only the Hungarian pengő had banknotes with this number in the denomination.


Notation Lower bound Upper bound
Scientific notation \(1\times10^{17}\)
Arrow notation \(10\uparrow17\)
Steinhaus-Moser Notation 14[3] 15[3]
Copy notation 9[17] 10[9]
Taro's multivariable Ackermann function A(3,53) A(3,54)
Pound-Star Notation #*(5,3,2,1)*4 #*(5,2,2)*6
BEAF {10,17}
Hyper-E notation E17
Bashicu matrix system (0)(0)[17782] (0)(0)[17783]
Hyperfactorial array notation 18! 19!
Fast-growing hierarchy \(f_2(50)\) \(f_2(51)\)
Hardy hierarchy \(H_{\omega^2}(50)\) \(H_{\omega^2}(51)\)
Slow-growing hierarchy \(g_{\omega^{\omega+7}}(10)\)


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