Hint: it's a cube of a cube
of a PRIME.
The Big Bang Theory Season 12, Episode 23
Encryption systems are built
on PRIME numbers.
The Big Bang Theory Season 6, Episode 8
and I have Amazon Prime.
The Big Bang Theory Season 12, Episode 2
Struck down
in the PRIME of my life.
The Big Bang Theory Season 7, Episode 22
The Prime Minister wants the crowd
to be dispersed immediately.
Money Heist Season 3, Episode 5