What is the Greatest Common Factor of 77481 and 77490?

Greatest common factor (GCF) of 77481 and 77490 is 9.

GCF(77481,77490) = 9

We will now calculate the prime factors of 77481 and 77490, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77481 and 77490.

How to find the GCF of 77481 and 77490?

We will first find the prime factorization of 77481 and 77490. After we will calculate the factors of 77481 and 77490 and find the biggest common factor number .

Step-1: Prime Factorization of 77481

Prime factors of 77481 are 3, 8609. Prime factorization of 77481 in exponential form is:

77481 = 3² × 8609¹

Step-2: Prime Factorization of 77490

Prime factors of 77490 are 2, 3, 5, 7, 41. Prime factorization of 77490 in exponential form is:

77490 = 2¹ × 3³ × 5¹ × 7¹ × 41¹

Step-3: Factors of 77481

List of positive integer factors of 77481 that divides 77481 without a remainder.

1, 3, 9, 8609, 25827

Step-4: Factors of 77490

List of positive integer factors of 77490 that divides 77481 without a remainder.

1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 41, 42, 45, 54, 63, 70, 82, 90, 105, 123, 126, 135, 189, 205, 210, 246, 270, 287, 315, 369, 378, 410, 574, 615, 630, 738, 861, 945, 1107, 1230, 1435, 1722, 1845, 1890, 2214, 2583, 2870, 3690, 4305, 5166, 5535, 7749, 8610, 11070, 12915, 15498, 25830, 38745

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77481 and 77490. The biggest common factor number is the GCF number.
So the greatest common factor 77481 and 77490 is 9.

Also check out the Least Common Multiple of 77481 and 77490