Numbering Nomenclature

or

Size Matters

Although we have prefices to name the powers of 10 up to 600 (10**600), there are only 20 SI decimal prefices defined by the National Bureau of Standards, as shown:

From largest to smallest:

Power of 10	Name	Symbol		Power of 10	Name	Symbol
24	yotta	Y		-1	deci	d
21	zetta	Z		-2	centi	c
18	exa	E		-3	milli	m
15	peta	P		-6	micro	µ
12	tera	T		-9	nano	n
9	giga	G		-12	pico	p
6	mega	M		-15	femto	f
3	kilo	k		-18	atto	a
2	hecto	h		-21	zepto	z
1	deka	da		-24	yocto	y

Sources:
http://physics.nist.gov/cuu/Units/prefixes.html
http://g42.org/MiscInfo/numbers.html
http://www.efunda.com/units/si_prefixes.cfm
http://www-personal.umich.edu/~rcnh/gs102/SI_prefixes.html

Last updated 04-12-29 23.14.27