What is the Greatest Common Factor of 91770 and 91789?

Greatest common factor (GCF) of 91770 and 91789 is 19.

GCF(91770,91789) = 19

We will now calculate the prime factors of 91770 and 91789, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91770 and 91789.

How to find the GCF of 91770 and 91789?

We will first find the prime factorization of 91770 and 91789. After we will calculate the factors of 91770 and 91789 and find the biggest common factor number .

Step-1: Prime Factorization of 91770

Prime factors of 91770 are 2, 3, 5, 7, 19, 23. Prime factorization of 91770 in exponential form is:

91770 = 2¹ × 3¹ × 5¹ × 7¹ × 19¹ × 23¹

Step-2: Prime Factorization of 91789

Prime factors of 91789 are 19, 4831. Prime factorization of 91789 in exponential form is:

91789 = 19¹ × 4831¹

Step-3: Factors of 91770

List of positive integer factors of 91770 that divides 91770 without a remainder.

1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 23, 30, 35, 38, 42, 46, 57, 69, 70, 95, 105, 114, 115, 133, 138, 161, 190, 210, 230, 266, 285, 322, 345, 399, 437, 483, 570, 665, 690, 798, 805, 874, 966, 1311, 1330, 1610, 1995, 2185, 2415, 2622, 3059, 3990, 4370, 4830, 6118, 6555, 9177, 13110, 15295, 18354, 30590, 45885

Step-4: Factors of 91789

List of positive integer factors of 91789 that divides 91770 without a remainder.

1, 19, 4831

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 91770 and 91789. The biggest common factor number is the GCF number.
So the greatest common factor 91770 and 91789 is 19.

Also check out the Least Common Multiple of 91770 and 91789