No. 178.

Grover Cleveland is officially both the 22nd and the 24th President of the United States. He served non-consecutive terms, but somehow is counted twice.

(Source: QI.)

No. 123.

All the numbers on a roulette wheel add up to 666.

(Source: QI. Verified using Google.)

No. 115.

The E number of gold is E175.

(Source: Twitter feed QIkipedia.)

No. 108.

In The Big Bang Theory, Penny's apartment is 314. This is a reference to Pi, which is commonly rounded up to 3.14.

(Source: Internet Movie Database.)