9
The common factors of 51 and 39 are 1 and 3.
The factors of 39 are 1, 3, 13, and 39. Its prime factors are 3 x 13. The factors of 51 are 1, 3, 17, and 51. Its prime factors are 3 x 17.
The positive integer factors of 663 are: 1, 3, 13, 17, 39, 51, 221, 663
The GCF of 39 and 51 is 3.3
39
The factors of 1989 are: 1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989.
The greatest common factor of 51, 66, and 39 is 3. Work shown below 51 = 3 * 17 66 = 2 * 3 * 11 39 = 3 * 13
141
The Greatest Common Factor of 39, 48, 51: 3
The Greatest Common Factor (GCF) of 39, 12, and 51 is 3.
51
1, 3, 17, 51