Quadrillion
Encyclopedia
Quadrillion may mean either of the two numbers (see long and short scales
for more detail):
Long and short scales
The long and short scales are two of several different large-number naming systems used throughout the world for integer powers of ten. Many countries, including most in continental Europe, use the long scale whereas most English-speaking countries use the short scale...
for more detail):
- 1,000,000,000,000,000 (one thousand million million;
; SI prefixSI prefixThe International System of Units specifies a set of unit prefixes known as SI prefixes or metric prefixes. An SI prefix is a name that precedes a basic unit of measure to indicate a decadic multiple or fraction of the unit. Each prefix has a unique symbol that is prepended to the unit symbol...
peta-) – for all short scale countries; increasingly common meaning in English language usage - 1,000,000,000,000,000,000,000,000 (one million million million million;
; SI prefix: yotta-) – for all long scale countries; increasingly rare meaning in English language usage
See also
- Names of large numbersNames of large numbersThis article lists and discusses the usage and derivation of names of large numbers, together with their possible extensions.The following table lists those names of large numbers which are found in many English dictionaries and thus have a special claim to being "real words"...