Themselves and one because they are both prime numbers
All Factors of 69:1, 3, 23, 693 and 23 are prime.
The factors of 138 are 1, 2, 3, 6, 23, 46, 69, and 138
The factors of 1725 are: 1 3 5 15 23 25 69 75 115 345 575 1725. The prime factors are: 3, 5, 23
The factors of 21 are: 1, 3, 7, 21 The factors of 23 are: 1, 23
The prime factors are: 3 x 3 x 3 x 23
factors: 1, 3, 9, 23, 27, 69, 207, 621prime factors: 3, 3, 3, 23
3 x 23 The prime factors of 69 are 3 and 23.
factors: 1, 3, 5, 15, 23, 69, 115, 345prime factors: 3, 5, 23
The factors of 69 are 1, 3, 23 and 69.1, 3, 23, 69.
The prime factors are: 3 and 23: (3 x 23 = 69)
factors: 1, 3, 5, 15, 23, 69, 115, 345prime factors: 3, 5, 23
factors: 1, 3, 7, 21, 23, 69, 161, 483prime factors: 3, 7, 23
The factors of 15 are: 1, 3, 5, 15The factors of 23 are: 1, 23
Factors of 21: 1, 3, 7 and 21 Factors of 22: 1, 2, 11 and 22 Factors of 23: 1 and 23 Note that: 2, 3, 7, 11 and 23 are prime numbers
prime factors of 60 = 2 * 2 * 3 * 5 and of 23 = 23 (23 is a prime number)
The factors of 897 are: 1, 3, 13, 23, 39, 69, 299, and 897.The prime factors of 897 are: 3, 13, and 23.
All Factors of 69:1, 3, 23, 693 and 23 are prime.