Préfixes et puissances de 10

 

 

 

symbole abréviations du symbole valeur en puissance de 10
yotta Y 1024 = 1 000 000 000 000 000 000 000 000
zetta Z 1021 =        1 000 000 000 000 000 000 000
exa E 1018 =                 1 000 000 000 000 000 000
peta P 1015 =                        1 000 000 000 000 000
téra T 1012 =                               1 000 000 000 000
giga G 109 =                                       1 000 000 000
méga M 106 =                                              1 000 000
kilo k 103 =                                                     1 000
hecto h 102 =                                                        100
déca da 101 =                                                          10
   

100 =                                                            1

déci d

10-1 =                                                           0, 1

centi c 10-2 =                                                           0, 01
milli m 10-3 =                                                           0, 001
micro m 10-6 =                                                           0, 000 001
nano n 10-9 =                                                           0, 000 000 001
pico p 10-12 =                                                          0, 000 000 000 001
femto f 10-15 =                                                          0, 000 000 000 000 001
atto a 10-18 =                                                          0, 000 000 000 000 000 001
zepto z 10-21 =                                                          0, 000 000 000 000 000 000 001
yokto y 10-24 =                                                          0, 000 000 000 000 000 000 000 001

voir  le nom des grands nombres et des très grands nombres (prendre une aspirine 20 minutes avant)