What is the Greatest Common Factor of 77485 and 77490?

Greatest common factor (GCF) of 77485 and 77490 is 5.

GCF(77485,77490) = 5

We will now calculate the prime factors of 77485 and 77490, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77485 and 77490.

How to find the GCF of 77485 and 77490?

We will first find the prime factorization of 77485 and 77490. After we will calculate the factors of 77485 and 77490 and find the biggest common factor number .

Step-1: Prime Factorization of 77485

Prime factors of 77485 are 5, 15497. Prime factorization of 77485 in exponential form is:

77485 = 5¹ × 15497¹

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 77485

List of positive integer factors of 77485 that divides 77485 without a remainder.

1, 5, 15497

Step-4: Factors of 77490

List of positive integer factors of 77490 that divides 77485 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 77485 and 77490. The biggest common factor number is the GCF number.
So the greatest common factor 77485 and 77490 is 5.

Also check out the Least Common Multiple of 77485 and 77490