1, 7
1, 13
1, 23
23 x 7 x 13
Just 1.
The Prime Factor of 81 is 3The Prime Factors of 28 are 2, 7
factors: 1, 7, 23, 161prime factors: 7, 23
Factors cannot be used to get means. The mean of 3, 7 and 13 is (3+7+13)/3 = 23/3 = 72/3 The numbers whose mean was calculated (3, 7 and 13) were all prime numbers, there were a prime number of them (3), and their sum was prime (23). No factors in sight!
The factors of 299 are 1, 13, 23, and 299. The prime factors are 13 x 23.
1, 13 1, 23
Factors of 13: 1, 13Factors of 23: 1, 23Factors of 28: 1, 2, 4, 7, 14, 28GCF (13, 23, 28) = 1
The factors of 91 are: 1, 7, 13, 91 The factors of 140 are: 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140
factors: 1, 3, 7, 21, 23, 69, 161, 483prime factors: 3, 7, 23
The factors of 897 are: 1, 3, 13, 23, 39, 69, 299, and 897.The prime factors of 897 are: 3, 13, and 23.
The factors of 91 are: 1 7 13 91 The prime factors are: 7 and 13