# One hundred nine

**One hundred nine** (also

**One hundred and nine**) (109, CIX) is the

natural number following

one hundred eight and preceding

one hundred ten. It is the 29nd

prime number. The previous prime is

one hundred seven, with which it comprises a

twin prime.

**One hundred nine** is also:

This article is about the

number. For the year AD 109, see

109.