Permillion

The permillion is equal to \(10^{3\times10^{3\times10^{15,000,000,000,000,000,000}}+3}\). This term was coined by Bella Tersumi.Ultimate website of large numbers (illions version) Accessed 2024-05-28.
==Etmology==
This number is generalized from "p" (5th Tier 3 multiplicative root) and "ferm" (6th Tier 4 root from "fermillion" with the first letter removed as a Tier 3 multiplicative) and the suffix "-illion".
== Approximations ==
Notation 	Expression
Up-arrow notation 	\(10 \uparrow (3 \times (10 \uparrow (3 \times (10 \uparrow (15 \times (10 \uparrow 18)))))+3)\)
Chained arrow notation	\(10 \rightarrow (3 \times (10 \rightarrow (3 \times (10 \rightarrow (15 \times (10 \rightarrow 18)))))+3)\)
H* function 	H(H(H(5*H(5)-1)-1)) (exact)
BEAF 	\(\{10,\{3\times \{10,3 \times \{10,15 \times \{10,18\}\}\}+3\}\}\)
==Sources==
==See also==
Category:Numbers
Category:Numbers by Bella Tersumi
Category:Illion
Category:Class 5
Category:Tier 4 -illion numbers