378 = 2 * 3 * 3 * 3 * 7
233357 is a prime number.
409 is a prime number.
No.
23 is a prime number.
5
Each composite number has its own unique prime factorization.
An unlimited number.
It is: 225
5
Just one.
Dumb...its 3 and 3...
No. No even number greater than two is prime.