What is the Greatest Common Factor of 28161 and 28175?

Greatest common factor (GCF) of 28161 and 28175 is 7.

GCF(28161,28175) = 7

We will now calculate the prime factors of 28161 and 28175, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28161 and 28175.

How to find the GCF of 28161 and 28175?

We will first find the prime factorization of 28161 and 28175. After we will calculate the factors of 28161 and 28175 and find the biggest common factor number .

Step-1: Prime Factorization of 28161

Prime factors of 28161 are 3, 7, 149. Prime factorization of 28161 in exponential form is:

28161 = 3³ × 7¹ × 149¹

Step-2: Prime Factorization of 28175

Prime factors of 28175 are 5, 7, 23. Prime factorization of 28175 in exponential form is:

28175 = 5² × 7² × 23¹

Step-3: Factors of 28161

List of positive integer factors of 28161 that divides 28161 without a remainder.

1, 3, 7, 9, 21, 27, 63, 149, 189, 447, 1043, 1341, 3129, 4023, 9387

Step-4: Factors of 28175

List of positive integer factors of 28175 that divides 28161 without a remainder.

1, 5, 7, 23, 25, 35, 49, 115, 161, 175, 245, 575, 805, 1127, 1225, 4025, 5635

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28161 and 28175. The biggest common factor number is the GCF number.
So the greatest common factor 28161 and 28175 is 7.

Also check out the Least Common Multiple of 28161 and 28175