$KernelID is a unique ID number assigned to each running parallel kernel.

BaseForm[expr, n] prints with the numbers in expr given in base n.

$MachinePrecision gives the number of decimal digits of precision used for machine-precision numbers.

Mathematica works with both exact quantities and approximate numbers. Using N , you can obtain a numerical approximation to an exact quantity with any desired precision or ...

$Line is a global variable that specifies the number of the current input line.

Mathematica 7 represents another major achievement in Mathematica's long history of innovation in mathematics and algorithms. Building on the broad capabilities of ...

MachinePrecision is a symbol used to indicate machine-number precision.

DivisorSum[n, form] represents the sum of form[i] for all i that divide n.DivisorSum[n, form, cond] includes only those divisors for which cond[i] gives True.

Im[z] gives the imaginary part of the complex number z.

Re[z] gives the real part of the complex number z.