In Exploding Pound-Star Notation, Ultra-hyper-cosmo-galaxi-cosmo-hyper-ultrol is equal to #{5}{4}{3}{2}{3}{4}{5}((10))*100.[1] While it may seem much bigger, it is, in fact (googologically speaking) only slightly larger than Bi-ultrol. The name was coined by SuperJedi224.

Approximations in other notationsEdit

Notation Approximation
Hyper-E notation \(E100\#^{7}100\#^{7}102\)
X-Sequence Hyper-Exponential Notation \(100\{X^6*2\}102\)
Fast-growing hierarchy \(f_{\omega^6\times2}(102)\)
Hardy hierarchy \(H_{\omega^{\omega^6\times2}}(102)\)


  1. [1]

See alsoEdit

Numbers By SuperJedi224

Fibonacci Numbers

Pound-Star Notation

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