Zettossolplex is equal to \(\lbrace 10,\text{zettossol} (7) 2 \rbrace\) in BEAF.[1] The term was coined by Jonathan Bowers.


The name of this number is based on suffix "-plex" and the number "zettossol".


Notation Approximation
Bird's array notation {10,zetossol [8] 2} (exact)
Cascading-E notation E10#^#^(7)10#2
X-Sequence Hyper-Exponential Notation 10{XX7}10{XX7}10
Fast-growing hierarchy \(f^2_{\omega^{\omega^7} }(10)\)
Hardy hierarchy \(H_{\omega^{\omega^{\omega^7} }\times 2}(10)\)
Slow-growing hierarchy \(g^2_{\psi(\Omega^{\Omega^{\Omega^7} })}(10)\)


  1. Bowers, JonathanInfinity Scrapers. Retrieved January 2013.

See also

Jonathan Bowers' colossol series
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