519 is prime, not composite.
The factors of 519 are: 1, 3, 173, and 519.The prime factors of 519 are: 3 and 173.
The positive integer factors of 519 are: 1, 3, 173, 519
It is divisible by any of its factors which are 1, 3, 173 and 519
3, 173
The composite factors of 75 are 15,25 and 75.
Composite because it has more factors than just 1 and itself. The factors are 1,2 3,6,9,18.
The composite factors of 22 are 1 and 22.
The composite factors of 45 are 9, 15 and 45.
The factors that are composite numbers, those that have more than two factors.
A composite number has three or more factors.
Factors can be prime or composite. The factors of 30 are 1,2,3,5,6,10,15 and 30. Of these, 3 and 5 are prime. The rest are composite except for 1, which is neither.
There are infinitely many composite numbers with infinitely many factors.