I asked AI what is more - a million billion or a billion million

[Bretrick]

A million-billion and a billion-million are the same thing; both represent a million multiplied by a billion, or 10^12 + 10^9. This is equal to one trillion.
Therefore, a million-billion is equal to a billion-million.

Does not seem right to me.
A trillion is 1000 x a billion, is this not true?

 

[hollydolly]

from AI

When discussing "a billion millions," the answer depends on whether you're using the short scale or the long scale numbering system
.


1. Short scale

• A billion is defined as one thousand million (1,000,000,000).
• Therefore, "a billion millions" would be 1,000 million multiplied by a million:
  1,000,000,000 * 1,000,000 = 1,000,000,000,000,000.
• This number is also known as one quadrillion.
• The short scale is widely used in English-speaking countries and in scientific and financial contexts worldwide.

​

Is a US billion the same as an UK billion?


AI Overview

No, a US billion is not the same as a UK billion. In the US, a billion is one thousand million (1,000,000,000), while historically in the UK, a billion was one million million (1,000,000,000,000). However, the UK officially adopted the US (and international) definition in 1974, so now a UK billion is also one thousand million.


Historical Context:

• US:
  From early on, the US used the term "billion" to mean one thousand million.
  

• UK:
  Historically, the UK used "billion" to mean one million million, which is equivalent to a US trillion. This was also the case in many other European countries.
  
  
• Shift in the UK:
  In the mid-20th century, the UK began using the US (and international) definition more frequently, especially in technical and financial contexts.
  
  
• Official Adoption:
  The UK officially switched to the one thousand million definition for all official purposes in 1974.
  Current Usage:
  While the UK officially uses the one thousand million definition, it's still possible to encounter the old definition in older texts or if someone is referring to historical data. However, for all practical purposes, in modern usage, a billion in both the US and the UK is one thousand million (1,000,000,000).