Icosikaienneahedron

An Icosikaienneahedron (also known as an Icosienneahedron) is a polyhedron with 29 faces. There are numerous types of Icosikaienneahedron, for example the Icosikaioctagonal pyramid, and Icosikaiheptagonal prism for instance.

Name of Icosikaienneahedron

The name of Icosikaienneahedron is based on its meaning. -ennea represents Nine. Icosi- represents Twenty, and when combined with the polyhedron suffix -hedron, and -kai- for the combining of the two numbers, the name of the polyhedron becomes Icosikaienneahedron.

Hyperbolic 5-space Icosikaitetrahedral honeycomb

This is a honeycomb of data {3,3,4,3,3}.

Roman Extended

"I V X L C D M ???." We need more!!! So yeah, people got together to extend the Roman numerals, so we could get further than 3999. (or MMMCMXCIX in Roman.) They used overlines, and the original numerals, to make the new ones!


Number in Base 10:	2023	3999	4000	5000	10000	50000	1000000	3999999	400000	$(4\times 10^{9})-1$
Roman Numeral:	MMXXIII	MMMCMXCIX	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Roman Extended:	MMXXIII	MMMCMXCIX	MV	V	X	L	M	MMMCMXCMXCMXCIX	MV	Possible, but it's too long to show...