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The quadroobol is equal to {10,10,10,10,100 (1) 2} in BEAF.[1] The term was coined by Jonathan Bowers.

### Etymology

The name of this number is based on Latin prefix "quadri-" and the number "goobol".

### Approximations and exact values in other notations

Notation Approximation
Bird's array notation $$\{10,10,10,10,100 [2] 2\}$$ (exactly equal)
Cascading-E notation $$E100\#\text{^}\#100\#\#\#\#101$$
Hyperfactorial Array Notation $$100![[1,1,3],1,1,2]$$
Fast-growing hierarchy $$f_{\omega^{\omega}+\omega^3}(100)$$
Hardy hierarchy $$H_{\omega^{\omega^{\omega}+\omega^3}}(100)$$
Slow-growing hierarchy $$g_{\vartheta(\Omega^\Omega+(\Omega^2)\omega)}(100)$$

### Sources

1. Bowers, JonathanInfinity Scrapers. Retrieved January 2013.

Jonathan Bowers' googol series

Googol series: googol(plex/duplex/triplex/quadraplex) · giggol(plex/duplex) · gaggol(plex/duplex) · geegol(plex) · gigol(plex) · goggol(plex) · gagol(plex)
Boogol series: boogol(plex/duplex/triplex) · biggol(plex/duplex) · baggol(plex) · beegol(plex) · bigol(plex) · boggol(plex) · bagol(plex)
Troogol series: troogol(plex/duplex) · triggol(plex) · traggol(plex) · treegol(plex) · trigol(plex) · troggol(plex) · tragol(plex)
Quintoogol series: quintoogol(plex) · quintiggol · quintaggol · quinteegol · quintigol · quintoggol · quintagol · (sextoogol · septoogol · octoogol)
Goobol series: goobol(plex) · gibbol · gabbol · geebol · gibol · gobbol · gabol
Boobol series: boobol · bibbol · babbol · beebol · bibol · bobbol · babol
Troobol series: troobol · tribbol · trabbol · treebol · tribol · trobbol · trabol
Gossol series: gossol(plex) · gissol(plex) · gassol(plex) · geesol(plex) · gussol(plex)
Mossol series: mossol(plex) · missol · massol · meesol · mussol
Bossol series: bossol · bissol · bassol · beesol · bussol
Trossol series: trossol · trissol · trassol · treesol · trussol · (quadrossol · quintossol)
Dubol series: dubol · dutrol · duquadrol · dossol(plex)