Integer
Integer
is the head for the atomic integer type.
Attributes[Integer] := {Protected}
Simple examples
In[1]:= Head[153] Out[1]= Integer
Integer numbers are backed by arbitrary-precision data structures:
In[2]:= Factorial[40] Out[2]= 815915283247897734345611269596115894272000000000
Further examples
In[1]:= MatchQ[153, _Integer] Out[1]= True