What is the Greatest Common Factor of 9885 and 9890?

Greatest common factor (GCF) of 9885 and 9890 is 5.

GCF(9885,9890) = 5

We will now calculate the prime factors of 9885 and 9890, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 9885 and 9890.

How to find the GCF of 9885 and 9890?

We will first find the prime factorization of 9885 and 9890. After we will calculate the factors of 9885 and 9890 and find the biggest common factor number .

Step-1: Prime Factorization of 9885

Prime factors of 9885 are 3, 5, 659. Prime factorization of 9885 in exponential form is:

9885 = 3¹ × 5¹ × 659¹

Step-2: Prime Factorization of 9890

Prime factors of 9890 are 2, 5, 23, 43. Prime factorization of 9890 in exponential form is:

9890 = 2¹ × 5¹ × 23¹ × 43¹

Step-3: Factors of 9885

List of positive integer factors of 9885 that divides 9885 without a remainder.

1, 3, 5, 15, 659, 1977, 3295

Step-4: Factors of 9890

List of positive integer factors of 9890 that divides 9885 without a remainder.

1, 2, 5, 10, 23, 43, 46, 86, 115, 215, 230, 430, 989, 1978, 4945

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 9885 and 9890. The biggest common factor number is the GCF number.
So the greatest common factor 9885 and 9890 is 5.

Also check out the Least Common Multiple of 9885 and 9890