**Q: **Is a prime number called a composite number? ¶

**A: **Yes.

**Q: **Are prime numbers also used for hash tables and pseudorandom number generators? ¶

**A: **Yes.

**Q: **Are prime numbers used as a metaphor for loneliness and isolation in the Paolo Giordano novel The Solitude of Prime Numbers? ¶

**A: **Yes, and in which they are portrayed as "outsiders" among integers.

**Q: **Is a prime number so important that it has been generalized in different ways in various branches of mathematics? ¶

**A: **Yes.

**Q: **Are prime numbers that it essentially says that the primes are as regularly distributed as possible? ¶

**A: **Yes.

**Q: **Were prime numbers thought to have extremely limited application outside of pure mathematics? ¶

**A: **Yes.

**Q: **Are prime numbers the following: division is possible in modular arithmetic if and only if n is a prime? ¶

**A: **Yes.