What is the Greatest Common Factor of 28345 and 28365?

Greatest common factor (GCF) of 28345 and 28365 is 5.

GCF(28345,28365) = 5

We will now calculate the prime factors of 28345 and 28365, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28345 and 28365.

How to find the GCF of 28345 and 28365?

We will first find the prime factorization of 28345 and 28365. After we will calculate the factors of 28345 and 28365 and find the biggest common factor number .

Step-1: Prime Factorization of 28345

Prime factors of 28345 are 5, 5669. Prime factorization of 28345 in exponential form is:

28345 = 5¹ × 5669¹

Step-2: Prime Factorization of 28365

Prime factors of 28365 are 3, 5, 31, 61. Prime factorization of 28365 in exponential form is:

28365 = 3¹ × 5¹ × 31¹ × 61¹

Step-3: Factors of 28345

List of positive integer factors of 28345 that divides 28345 without a remainder.

1, 5, 5669

Step-4: Factors of 28365

List of positive integer factors of 28365 that divides 28345 without a remainder.

1, 3, 5, 15, 31, 61, 93, 155, 183, 305, 465, 915, 1891, 5673, 9455

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28345 and 28365. The biggest common factor number is the GCF number.
So the greatest common factor 28345 and 28365 is 5.

Also check out the Least Common Multiple of 28345 and 28365