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The Fermat number F_n is prime iff 3^(2^(2^n-1))=-1 (mod F_n).

The number of digits used to perform a given computation. The concepts of accuracy and precision are both closely related and often confused. While the accuracy of a number x ...

alpha is called a predecessor if there is no ordinal number beta such that beta+1=alpha.

The cumulative frequency in a frequency distribution divided by the total number of data points.

The ratio of the absolute frequency to the total number of data points in a frequency distribution.

If n>19, there exists a Poulet number between n and n^2. The theorem was proved in 1965.

A system is singular if its condition number is infinite and ill-conditioned if it is too large.

The word "spectrum" confusingly has a number of unrelated meanings in various branches of mathematics.

The ordinal number of a value in a list arranged in a specified order (usually decreasing).

For a particular format in the IEEE 754-2008 framework, a subnormal number is a nonzero floating-point number with magnitude less than the magnitude of that formatÕs smallest ...