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Quadraggol is equal to $$\{10,10,10,10,100,3\}$$ in BEAF.[1] The term was coined by Chris Bird.

Username5243 calls this number Trugigoogol (formerly Truteroogol), and it's equal to $$10[0,0,0,3]100$$ in Username5243's Array Notation.[2]

## Etymology

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

## Approximations

Notation Approximation
Bird's array notation $$\{10,10,10,10,100,3\}$$ (exact)
Hyper-E notation $$\textrm E100\#\#\#\#100\#\#\#\#100\#\#\#\#100$$
Fast-growing hierarchy $$f_{(\omega^3) 3}(100)$$
Hardy hierarchy $$H_{\omega^{(\omega^3) 3}}(100)$$
Slow-growing hierarchy $$g_{\varphi(2,99,99,99,0)}(100)$$

## Sources

1. Bowers, JonathanInfinity Scrapers. Retrieved January 2013.
2. Username5243. shortened list - My Large Numbers. Retrieved 2018-02-20.

Jonathan Bowers' googol series

Googol series: googol(plex/duplex/triplex/quadraplex/quinplex) · 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 · boggol · bagol
Troogol series: troogol(plex/duplex) · triggol(plex/duplex) · traggol(plex/duplex) · treegol · trigol · troggol · tragol
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