What is the Greatest Common Factor of 91800 and 91815?

Greatest common factor (GCF) of 91800 and 91815 is 15.

GCF(91800,91815) = 15

We will now calculate the prime factors of 91800 and 91815, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91800 and 91815.

How to find the GCF of 91800 and 91815?

We will first find the prime factorization of 91800 and 91815. After we will calculate the factors of 91800 and 91815 and find the biggest common factor number .

Step-1: Prime Factorization of 91800

Prime factors of 91800 are 2, 3, 5, 17. Prime factorization of 91800 in exponential form is:

91800 = 2³ × 3³ × 5² × 17¹

Step-2: Prime Factorization of 91815

Prime factors of 91815 are 3, 5, 6121. Prime factorization of 91815 in exponential form is:

91815 = 3¹ × 5¹ × 6121¹

Step-3: Factors of 91800

List of positive integer factors of 91800 that divides 91800 without a remainder.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 25, 27, 30, 34, 36, 40, 45, 50, 51, 54, 60, 68, 72, 75, 85, 90, 100, 102, 108, 120, 135, 136, 150, 153, 170, 180, 200, 204, 216, 225, 255, 270, 300, 306, 340, 360, 408, 425, 450, 459, 510, 540, 600, 612, 675, 680, 765, 850, 900, 918, 1020, 1080, 1224, 1275, 1350, 1530, 1700, 1800, 1836, 2040, 2295, 2550, 2700, 3060, 3400, 3672, 3825, 4590, 5100, 5400, 6120, 7650, 9180, 10200, 11475, 15300, 18360, 22950, 30600, 45900

Step-4: Factors of 91815

List of positive integer factors of 91815 that divides 91800 without a remainder.

1, 3, 5, 15, 6121, 18363, 30605

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 91800 and 91815. The biggest common factor number is the GCF number.
So the greatest common factor 91800 and 91815 is 15.

Also check out the Least Common Multiple of 91800 and 91815