SI prefixes1000m10nPrefixSymbolSince[1]
Short scaleLong scaleDecimal10008
1024yottaY1991SeptillionQuadrillion100000000000000000000000010007
1021zettaZ1991SextillionTrilliard100000000000000000000010006
1018exaE1975QuintillionTrillion100000000000000000010005
1015petaP1975QuadrillionBilliard100000000000000010004
1012teraT1960TrillionBillion100000000000010003
109gigaG1960BillionMilliard100000000010002
106megaM1960Million1 000 00010001
103kilok1795Thousand1000
and k is lower case.......