mantissa

Logarithm's decimal portion

The mantissa is the fractional part of a logarithm—the digits after the decimal point.

In the common logarithm of 457 (which is approximately 2.66), the mantissa is .66 while the integer part (2) is called the characteristic.

The term also applies in computing to the significant digits of a floating-point number, though "significand" is now preferred in that context.

logarithm

characteristic

Distinguishing quality or trait

log · ln · logarithmic · calculation · precision · computation

floating-point

exponent

Superscript showing power

radix · overflow · underflow · rounding · truncation · representation · encoding · computation · arithmetic

Categories
Opposites
logarithmic components

mantissacharacteristic

Distinguishing quality or trait

exponent

Family

appendage, significant figures

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Used worldwide · Timeless · Abstract · Rated G