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Engineering Measurements

Name Letter Description Suffix Number
yoctoyseptillionth10-24.000 000 000 000 000 000 000 001
zeptozsextillionth10-21.000 000 000 000 000 000 001
attoaquintillionth10-18.000 000 000 000 000 001
femtofquadrillionth10-15.000 000 000 000 001
picoptrillionth10-12.000 000 000 001
angtrom#ten billionth10-10.000 000 000 000 1
#Used by physicists, and materials Scientist's. Engineers use nanometres to describe small IC features as we use powers in steps of 3.
nanonbillionth10-9.000 000 001
micromillionth10-6.000 001
millimthousandth10-3.001
centichundredth10-2.01
decidtenth10-1.1
decadaten10110
hectohhundred102100
kilokthousand1031 000
megaMmillion1061 000 000
gigaGbillion1091 000 000 000
teraTtrilion10121 000 000 000 000
petaPquadrillion10151 000 000 000 000 000
exaEquintillion10181 000 000 000 000 000 000
zettaZsextillion10211 000 000 000 000 000 000 000
yottaYseptillion10241 000 000 000 000 000 000 000 000
tebi1040
googol10100 Note: the google search engine is based on
this number but uses a different spelling.
googolplex*10googol

*Probably higher than the number of Atoms in the known Universe of 100 Billion known Galaxies each with 400 Billion or so Stars.