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unit prefix comparison table

Subject	has value	has symbol
atto	10-18	a
centi	10-2	c
deci	10-1	d
deka	101	da
exa	1018	E
femto	10-15	f
giga	109	G
hecto	102	h
kilo	103	k
mega	106	M
micro	10-6	μ
milli	10-3	m
nano	10-9	n
peta	1015	P
pico	10-12	p
tera	1012	T
yocto	10-24	y
yotta	1024	Y
zepto	10-21	z
zetta	1021	Z

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