General:
* Prime time: The most popular time for television viewing.
* Prime minister: The head of government in some countries.
* Prime suspect: The person most likely to have committed a crime.
* Prime location: A highly desirable location.
* Prime example: A perfect or exemplary instance of something.
* Prime condition: In excellent condition, ready for use.
Mathematical:
* Prime number: A natural number greater than 1 that has no positive divisors other than 1 and itself.
* Prime factorization: The process of finding the prime numbers that multiply together to give a particular number.
Other:
* Prime directive: A fundamental instruction or goal.
* Prime mover: The person or thing that initiates an action or process.
* Primeval: Of or relating to the earliest period of existence.
* Primate: A member of the order Primates, which includes humans, apes, and monkeys.
* Primeval forest: A dense, ancient forest.
Figurative:
* In their prime: At their peak of development or ability.
* A prime candidate: Someone highly likely to be successful in a particular situation.
* Prime the pump: To stimulate or initiate something.
Let me know if you'd like to explore more phrases with "prime" or if you have any specific theme in mind!