Engineering.NumericalPrefix History

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Numerical Prefixes

This section explains the difference between deca and deci, peta and pico.

(:table border=1 cellpadding=3 cellspacing=0:) (:cell bgcolor=#d4d7ba:) 1000m (:cell bgcolor=#d4d7ba:) 10n (:cell bgcolor=#d4d7ba:) Prefix (:cell bgcolor=#d4d7ba:) Symbol (:cell bgcolor=#d4d7ba:) Short Scale (:cell bgcolor=#d4d7ba:) Decimal (:cellnr:) 10008 (:cell:) 1024 (:cell:) yotta- (:cell:) Y (:cell:) Septillion (:cell:) 1 000 000 000 000 000 000 000 000 (:cellnr:) 10007 (:cell:) 1021 (:cell:)zetta- (:cell:)Z (:cell:)Sextillion (:cell:)1 000 000 000 000 000 000 000 (:cellnr:) 10006 (:cell:)1018 (:cell:)exa- (:cell:) E (:cell:)Quintillion (:cell:)1 000 000 000 000 000 000 (:cellnr:) 10005 (:cell:)1015 (:cell:)peta- (:cell:)P (:cell:)Quadrillion (:cell:)1 000 000 000 000 000 (:cellnr:) 10004 (:cell:)1012 (:cell:)tera- (:cell:)T (:cell:)Trillion (:cell:)1 000 000 000 000 (:cellnr:) 10003 (:cell:)109 (:cell:)giga- (:cell:)G (:cell:)Billion (:cell:)1 000 000 000 (:cellnr:) 10002 (:cell:)106 (:cell:)mega- (:cell:)M (:cell:)Million (:cell:)1 000 000 (:cellnr:) 10001 (:cell:)103 (:cell:)kilo- (:cell:)k (:cell:)Thousand (:cell:)1 000 (:cellnr:) 10002/3 (:cell:)102 (:cell:)hecto- (:cell:)h (:cell:)Hundred (:cell:)100 (:cellnr:) 10001/3 (:cell:)101 (:cell:)deca- (:cell:)da (:cell:)Ten (:cell:)10 (:cellnr bgcolor=#cccccc:) 1000 (:cell bgcolor=#cccccc:) 100 (:cell bgcolor=#cccccc:) (none) (:cell bgcolor=#cccccc:) (none) (:cell bgcolor=#cccccc:) One (:cell bgcolor=#cccccc:) 1 (:cellnr:) 1000-1/3 (:cell:)10-1 (:cell:)deci- (:cell:)d (:cell:)Tenth (:cell:)0.1 (:cellnr:) 1000-2/3 (:cell:)10-2 (:cell:)centi- (:cell:)c (:cell:)Hundredth (:cell:)0.01 (:cellnr:) 1000-1 (:cell:)10-3 (:cell:)milli- (:cell:)m (:cell:)Thousandth (:cell:)0.001 (:cellnr:) 1000-2 (:cell:)10−6 (:cell:)micro- (:cell:) (:cell:)Millionth (:cell:)0.000 001 (:cellnr:) 1000-3 (:cell:)10−9 (:cell:)nano- (:cell:)n (:cell:)Billionth (:cell:)0.000 000 001 (:cellnr:) 1000-4 (:cell:)10−12 (:cell:)pico- (:cell:)p (:cell:)Trillionth (:cell:)0.000 000 000 001 (:cellnr:) 1000-5 (:cell:)10−15 (:cell:)femto- (:cell:)f (:cell:)Quadrillionth (:cell:)0.000 000 000 000 001 (:cellnr:) 1000-6 (:cell:)10−18 (:cell:)atto- (:cell:)a (:cell:)Quintillionth (:cell:)0.000 000 000 000 000 001 (:cellnr:) 1000-7 (:cell:)10−21 (:cell:)zepto- (:cell:)z (:cell:)Sextillionth (:cell:)0.000 000 000 000 000 000 001 (:cellnr:) 1000-8 (:cell:)10−24 (:cell:)yocto- (:cell:)y (:cell:)Septillionth (:cell:)0.000 000 000 000 000 000 000 001 (:tableend:)

Note: Our current budget deficit is in the trillions (10004).


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