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    SI Prefixes

    SI prefixes

    prefix name | factor | factor name q (quecto) | 10^(-30) | nonillionth r (ronto) | 10^(-27) | octillionth y (yocto) | 10^(-24) | septillionth z (zepto) | 10^(-21) | sextillionth a (atto) | 10^(-18) | quintillionth f (femto) | 10^(-15) | quadrillionth p (pico) | 10^(-12) | trillionth n (nano) | 10^(-9) | billionth μ (micro) | 10^(-6) | millionth m (milli) | 0.001 | thousandth c (centi) | 0.01 | hundredth d (deci) | 0.1 | tenth da (deka) | 10 | ten h (hecto) | 100 | hundred k (kilo) | 1000 | thousand M (mega) | 10^6 | million G (giga) | 10^9 | billion T (tera) | 10^12 | trillion P (peta) | 10^15 | quadrillion E (exa) | 10^18 | quintillion Z (zetta) | 10^21 | sextillion Y (yotta) | 10^24 | septillion R (ronna) | 10^27 | octillion Q (quetta) | 10^30 | nonillion

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