Tethrarxigong

The tethrarxigong is equal to E100#^^^#100,000 in Extended Cascading-E Notation. The term was coined by Sbiis Saibian. This number is slightly smaller than pentacthulhugong.
==Approximations==
Notation 	Approximation
BEAF 	\(\{X,X,1,2\}\ \&\ 100000\) (weaker bound)
\(\{X,X,3\}\ \&\ 100000 \) (stronger bound)
Bird's array notation 	\(\{100,100000[1[1\neg3]2]2\}\)
Hyperfactorial array notation 	\(100000![1(1)2]\)
Fast-growing hierarchy (using this system
of fundamental sequences)	\(f_{\varphi(1,0,0)[100,000]}(100)\)\(=f\)\(_{\Gamma_0}\)\(_{[100,000]}(100)\)
Hardy hierarchy 	\(H_{\Gamma_0[100,000]}(100)\)
Slow-growing hierarchy (with this system of fundamental sequences)	\(g_{\psi_0(\Omega_2^{\Omega_2})[100,000]}(100)\)
==Sources==
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Extended Cascading-E numbers
Category:Binary phi level
Category:Pentacthulhum series