What is the Greatest Common Factor of 91040 and 91045?

Greatest common factor (GCF) of 91040 and 91045 is 5.

GCF(91040,91045) = 5

We will now calculate the prime factors of 91040 and 91045, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91040 and 91045.

How to find the GCF of 91040 and 91045?

We will first find the prime factorization of 91040 and 91045. After we will calculate the factors of 91040 and 91045 and find the biggest common factor number .

Step-1: Prime Factorization of 91040

Prime factors of 91040 are 2, 5, 569. Prime factorization of 91040 in exponential form is:

91040 = 2⁵ × 5¹ × 569¹

Step-2: Prime Factorization of 91045

Prime factors of 91045 are 5, 131, 139. Prime factorization of 91045 in exponential form is:

91045 = 5¹ × 131¹ × 139¹

Step-3: Factors of 91040

List of positive integer factors of 91040 that divides 91040 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 569, 1138, 2276, 2845, 4552, 5690, 9104, 11380, 18208, 22760, 45520

Step-4: Factors of 91045

List of positive integer factors of 91045 that divides 91040 without a remainder.

1, 5, 131, 139, 655, 695, 18209

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 91040 and 91045. The biggest common factor number is the GCF number.
So the greatest common factor 91040 and 91045 is 5.

Also check out the Least Common Multiple of 91040 and 91045