MachineNumberQ[expr] returns True if expr is a machine-precision real or complex number, and returns False otherwise.
MakeExpression[boxes, form] is the low-level function used in Mathematica sessions to construct expressions from boxes.
MangoldtLambda[n] gives the von Mangoldt function \[CapitalLambda](n).
Missing
(Built-in Mathematica Symbol) Missing[] represents data that is missing.Missing["reason"] specifies a reason for the data being missing.Missing["reason", expr] associates the expression expr with the ...
NMaximize[f, x] maximizes f numerically with respect to x.NMaximize[f, {x, y, ...}] maximizes f numerically with respect to x, y, .... NMaximize[{f, cons}, {x, y, ...}] ...
NotebookDirectory[] gives the directory of the current evaluation notebook. NotebookDirectory[nb] gives the directory for the notebook specified by nb.
Notebook[{cell_1, cell_2, ...}] is the low-level construct that represents a notebook manipulated by the Mathematica front end.
NumberForm[expr, n] prints with approximate real numbers in expr given to n-digit precision.
On
(Built-in Mathematica Symbol) On[symbol::tag] switches on a message, so that it can be printed. On["name"] switches on a named group of messages.On[s] switches on tracing for the symbol s. On[m_1, m_2, ...
ParallelNeeds["context"] evaluates Needs["context"] on all available parallel kernels.