RandomPrime[{i_min, i_max}] gives a pseudorandom prime number in the range i_min to i_max.RandomPrime[i_max] gives a pseudorandom prime number in the range 2 to ...
TrackedSymbols is an option to Refresh, Manipulate, and related functions that specifies which symbols should trigger updates when their values are changed.
Trig
(Built-in Mathematica Symbol) Trig is an option for various polynomial manipulation functions that specifies whether trigonometric functions should be treated like polynomial elements.
$TimedOut is a special symbol returned by certain functions when an operation times out.
$TimeZone gives the current time zone to assume for dates and times.
Numerical sums, products and integrals. Here is a numerical approximation to ∑_(i=1)^∞((1)/(i^3)). NIntegrate can handle singularities in the integration region.
MakeJavaObject[expr] constructs a new Java object whose "value" is expr.
All the functionality in DiscreteMath`Combinatorica` is available in the newly created Combinatorica Package.
Some of the functionality in Graphics`Spline` has been added to the built-in Mathematica kernel.