What is the Greatest Common Factor of 30685 and 30702?

Greatest common factor (GCF) of 30685 and 30702 is 17.

GCF(30685,30702) = 17

We will now calculate the prime factors of 30685 and 30702, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30685 and 30702.

How to find the GCF of 30685 and 30702?

We will first find the prime factorization of 30685 and 30702. After we will calculate the factors of 30685 and 30702 and find the biggest common factor number .

Step-1: Prime Factorization of 30685

Prime factors of 30685 are 5, 17, 19. Prime factorization of 30685 in exponential form is:

30685 = 5¹ × 17¹ × 19²

Step-2: Prime Factorization of 30702

Prime factors of 30702 are 2, 3, 7, 17, 43. Prime factorization of 30702 in exponential form is:

30702 = 2¹ × 3¹ × 7¹ × 17¹ × 43¹

Step-3: Factors of 30685

List of positive integer factors of 30685 that divides 30685 without a remainder.

1, 5, 17, 19, 85, 95, 323, 361, 1615, 1805, 6137

Step-4: Factors of 30702

List of positive integer factors of 30702 that divides 30685 without a remainder.

1, 2, 3, 6, 7, 14, 17, 21, 34, 42, 43, 51, 86, 102, 119, 129, 238, 258, 301, 357, 602, 714, 731, 903, 1462, 1806, 2193, 4386, 5117, 10234, 15351

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30685 and 30702. The biggest common factor number is the GCF number.
So the greatest common factor 30685 and 30702 is 17.

Also check out the Least Common Multiple of 30685 and 30702