Two.
Two.
Every positive composite number only has one unique prime factorization.
3 and 7 are the two different prime factors of 63. Prime factorization of 63 is 3 x 3 x 7.
The prime factorization of 60 is: 2 x 2 x 3 x 5.
Each composite number has one distinct prime factorization. 3 x 41 = 123
Like all the other positive composite integers, 64 has one unique prime factorization.
Only one - which is repeated.
Each number only has one prime factorization.
2 x 2 x 2 x 2 x 5 is the only prime factorization of 80.
Zero has infinitely many factors, so a prime factorization would be unwieldy and ultimately meaningless. The prime factorization of 48 is 2 x 2 x 2 x 2 x 3
Two distinct prime factors, six total prime factors.