Powers of Ten

VERY LARGE NUMBERS:

"in words"     "in words" One 100 1. "ten to the zero" ten 101 10. "ten to the one" hundred 102 100. "ten to the two" thousand 103 1,000. "ten to the three" ten thousand 104 10,000. "ten to the four" hundred thousand 105 100,000. "ten to the five" million 106 1,000,000. "ten to the six" ten million 107 10,000,000. "ten to the seven" hundred million 108 100,000,000. "ten to the eight" billion 109 1,000,000,000. "ten to the nine" ten billion 1010 10,000,000,000. "ten to the ten" hundred billion 1011 100,000,000,000. "ten to the eleven" trillion 1012 1,000,000,000,000. "ten to the twelve" ten trillion 1013 10,000,000,000,000. "ten to the thirteen" hundred trillion 1014 100,000,000,000,000. "ten to the fourteen"

Names are on threes... on 3, 6, 9 (thousand, million, billion).   ,000, The names "billion" and "trillion" mean different things in different countries. This is the US version. There are a few more names after "trillion", but they are almost never used. VERY SMALL NUMBERS: "in words"     "in words" One 100 1. "ten to the zero" tenth 10-1 0.1 "ten to the minus one" hundredth 10-2 0.01. "ten to the minus two" thousandth 10-3 0.001. "ten to the minus three" ten thousand 10-4 0.0001. "ten to the minus four" hundred thousandth 10-5 0.00001. "ten to the minus five" millionth 10-6 0.000001 "ten to the minus six" ten millionth 10-7 0.0000001. "ten to the minus seven" hundred millionth 10-8 0.00000001. "ten to the minus eight" billionth 10-9 0.000000001. "ten to the minus nine" ten billionth 10-10 0.0000000001. "ten to the minus ten" hundred billionth 10-11 0.00000000001. "ten to the minus eleven" trillionth 10-12 0.000000000001 "ten to the minus twelve" ten trillionth 10-13 0.0000000000001. "ten to the minus thirteen" hundred trillionth 10-14 0.00000000000001. "ten to the minus fourteen" EXAMPLES of LARGE NUMBERS: 1 AU = 150,000,000 km = 1.5x l08 km = 9.2 x l07miles Mass of the Sun = 1 Solar Mass = 2.0 x 1030 kg 1 kilometer      = 1 km = 103 m  ~ 5/8 mile Energies of Fermilab's Chain of Accelerators: Cockroft Walton:  750 KeV (Kilo-electron volts, thousand electron volts)     = 750 times 103 electron volts  Linac (Linear Accelerator): 400 MeV ( Mega electron volts, million electron volts)     = 400 times 106 electron volts Booster, Recycler, Debuncher, Accumulator accelerators:           8 GeV (Giga-electron volts, billion (U.S.) electron volts)         = 8 times 109 electron volts Main Injector:  150 GeV = 150 x = 1.5 x 1011 electron volts Tevatron: 0.98 TeV (Tera electron volts, trillion electron volts) = nearly 1012 electron volts 109 electron volts EXAMPLES of SMALL NUMBERS: 1 centimeter     = 1 cm = 10-2 m  ~ 2/5 inch width of a pen 1 millimeter     = 1 mm = 10-3 m  ~ 1/25 inch width of lead in pencil 1 micrometer  =  1 micron  =  10-6            High power microscopes look at objects as small as a few micrometers 1 microsecond = 10-6 seconds           The lifetime of a mu-lepton is about 2 microseconds 1 nanosecond = 10-9 seconds           A pi-meson lives on the average for 26 nanoseconds           A particle at the speed of light travels about one foot in one nanosecond.

  http://www-bd.fnal.gov/public/powers.html