It's a PRIME number.
The Big Bang Theory Season 6, Episode 8
Hint: it's a cube of a cube
of a PRIME.
The Big Bang Theory Season 12, Episode 23
When he wrote his paper on supersingular
PRIME numbers, how long did it take?
The Big Bang Theory Season 9, Episode 8
The Prime Minister wants the crowd
to be dispersed immediately.
Money Heist Season 3, Episode 5
and I have Amazon Prime.
The Big Bang Theory Season 12, Episode 2