base-number
nounUK /ˈbeɪs ˈnʌmbə/
US /ˈbeɪs ˈnʌmbər/
A base number is the main number that other numbers are built from.
In the number 10, the base number is 10.
OTHER MEANINGS
2. The number that is repeatedly multiplied in a power, such as the 2 in 2 to the third power.
In 2 cubed, the base number is 2.
3. The number of different digits a counting system uses, like 10 in the decimal system.
Binary uses 2 as its base number.
4. A starting number used for comparison or measurement.
The base number for the price increase was last year's cost.