Function Repository Resource:

Composite

Get the nth composite number

Contributed by: Kyle Martin

ResourceFunction["Composite"][n]

gives the n^th composite number.

Details and Options

A composite number is an integer that is greater than 1 and not prime.

ResourceFunction["Composite"][1] is 4.

ResourceFunction["Composite"] automatically threads over lists.

The first 20 composites:

In[1]:=

Out[1]=

The billionth composite:

In[2]:=

Out[2]=

Plot the sequence:

In[3]:=

Out[3]=