Definition:Quadrillion/Long Scale

Definition

Quadrillion is a name for $10^{24}$ in the long scale system:

One quadrillion $= 10^{6 \times 4}$

Also defined as

In the short scale system:

One quadrillion $= 10^{3 \times 4 + 3} = 10^{15}$

Also see

• Definition:Quadrillion (Short Scale)

Historical Note

Some authorities insist that the British usage of quadrillion to mean $10^{24}$, that is $1 \, 000 \, 000^4$, is no longer used.

Sources

• 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): quadrillion