Table 2. International System (SI) prefixes, prefix symbols and the recommended factors they represent

PrefixSymbolFactor
deca da 101
hectoh 102
kilo k 103
mega M 106
giga G 109
tera T 1012
peta P 1015
exa E 1018
deci d 10–1
centic 10–2
millim 10–3
microμ10–6
nano n 10–9
pico p 10–12
femtof 10–15
atto a 10–18


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