You can think of a factor as a number that divides another number with no remainder. For example, 3 is a factor of 6 since 3 goes into 6 two times with no remainder. Now if the factor is prime, then it is a prime factor. So in the example above, 3 is a prime factor. This is because the factor itself has only two factors, 1 and itself. 6 goes into itself also, but since 6 is not prime, it is not a prime factor. Now that you understand it, here is a more precise definition. A prime factor is a factor that is a prime number. In other words, one of the prime numbers that, when multiplied, give the original number.
I might be reading this incorrectly, but it seems to me that I can take two prime numbers, 3 and 3, and make the square number nine out of them. This is also true of all the other prime numbers.
No, all primes greater than 2 are odd numbers.
The prime factors of 86 are: 2 43
You don't. 41 is a prime number. Prime numbers don't have factor trees, since they only have one prime factor.
The prime factorization of 24 is 2x2x2x3.
2x5x5=50
17 and 17
2x3x3x3
1225 = 52*72
7 x 53
They are: 2*17 = 34
They are: 5*5*5*11 = 1375
105 = 3 x 5 x 7
51 is composite. Becasuse 17 x 3 = 51 It is two prime numbers multiplied together to make a composite.
3 x 7 x 7 = 147
135 = 3 x 3 x 3 x 5