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  • MantissaExponent[ x ] gives a list containing the mantissa and exponent of an approximate real number x.
  • The mantissa is always a number between and . In absolute magnitude, the mantissa always lies between and .
  • Example: MantissaExponent[3.4 10^25].
  • MantissaExponent[ x , b ] gives the base-b mantissa and exponent. Its absolute magnitude is between and .
  • See the Mathematica book: Section 3.1.3.
  • See also: Log, RealDigits.