What is the Greatest Common Factor of 7730 and 7740?

Greatest common factor (GCF) of 7730 and 7740 is 10.

GCF(7730,7740) = 10

We will now calculate the prime factors of 7730 and 7740, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7730 and 7740.

How to find the GCF of 7730 and 7740?

We will first find the prime factorization of 7730 and 7740. After we will calculate the factors of 7730 and 7740 and find the biggest common factor number .

Step-1: Prime Factorization of 7730

Prime factors of 7730 are 2, 5, 773. Prime factorization of 7730 in exponential form is:

7730 = 2¹ × 5¹ × 773¹

Step-2: Prime Factorization of 7740

Prime factors of 7740 are 2, 3, 5, 43. Prime factorization of 7740 in exponential form is:

7740 = 2² × 3² × 5¹ × 43¹

Step-3: Factors of 7730

List of positive integer factors of 7730 that divides 7730 without a remainder.

1, 2, 5, 10, 773, 1546, 3865

Step-4: Factors of 7740

List of positive integer factors of 7740 that divides 7730 without a remainder.

1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 3870

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7730 and 7740. The biggest common factor number is the GCF number.
So the greatest common factor 7730 and 7740 is 10.

Also check out the Least Common Multiple of 7730 and 7740