Nonregular Number

A nonregular number, also called an infinite decimal (Havil 2003, p. 25), is a positive number that has an infinite decimal expansion. In contrast, a number that has a finite decimal representation such as 1/4=0.25 is said to be regular.

Nonregular numbers include repeating decimals, irrational numbers, and transcendental numbers.

See also

Decimal Expansion, Regular Number, Repeating Decimal

Explore with Wolfram|Alpha


Havil, J. Gamma: Exploring Euler's Constant. Princeton, NJ: Princeton University Press, 2003.

Referenced on Wolfram|Alpha

Nonregular Number

Cite this as:

Weisstein, Eric W. "Nonregular Number." From MathWorld--A Wolfram Web Resource.

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