Power of Ten	Prefix	Symbol
1018	exa	E
1015	peta	P
1012	tera	T
109	giga	G
106	mega	M
103	kilo	k
102	hecto	h
101	deca/deka	da
100	-	-
10-1	deci	d
10-2	centi	c
10-3	milli	m
10-6	micro	µ (mu)
10-9	nano	n
10-12	pico	p
10-15	femto	f
10-18	atto	a