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The goobol is equal to $$\lbrace10,100 (1) 2\rbrace = \{\underbrace{10,10 \ldots 10,10}_{100}\}$$ in BEAF.[1] The term was coined by Jonathan Bowers.

Goobol is comparable to Saibian's Godgahlah.

### Approximations and exact values in other notations Edit

Notation Approximation
Bird's array notation $$\{10,100 [2] 2\}$$ (exactly equal)
Hyper-E notation $$E100 \# ^{99} 100$$
Cascading-E notation $$E100\#\text{^}\#99$$
Hyperfactorial array notation $$100![1,1,1,2]$$
Notation Array Notation $$(100\{5,99\}2)$$
X-Sequence Hyper-Exponential Notation $$10\{X^{98}\}100$$
Fast-growing hierarchy $$f_{\omega^{98}}(100)$$
Hardy hierarchy $$H_{\omega^{\omega^{98}}}(100)$$
Slow-growing hierarchy $$g_{\vartheta(\Omega^\omega)}(100)$$

### Sources Edit

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