What is the Greatest Common Factor of 99940 and 99945?

Greatest common factor (GCF) of 99940 and 99945 is 5.

GCF(99940,99945) = 5

We will now calculate the prime factors of 99940 and 99945, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 99940 and 99945.

How to find the GCF of 99940 and 99945?

We will first find the prime factorization of 99940 and 99945. After we will calculate the factors of 99940 and 99945 and find the biggest common factor number .

Step-1: Prime Factorization of 99940

Prime factors of 99940 are 2, 5, 19, 263. Prime factorization of 99940 in exponential form is:

99940 = 2² × 5¹ × 19¹ × 263¹

Step-2: Prime Factorization of 99945

Prime factors of 99945 are 3, 5, 2221. Prime factorization of 99945 in exponential form is:

99945 = 3² × 5¹ × 2221¹

Step-3: Factors of 99940

List of positive integer factors of 99940 that divides 99940 without a remainder.

1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 263, 380, 526, 1052, 1315, 2630, 4997, 5260, 9994, 19988, 24985, 49970

Step-4: Factors of 99945

List of positive integer factors of 99945 that divides 99940 without a remainder.

1, 3, 5, 9, 15, 45, 2221, 6663, 11105, 19989, 33315

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 99940 and 99945. The biggest common factor number is the GCF number.
So the greatest common factor 99940 and 99945 is 5.

Also check out the Least Common Multiple of 99940 and 99945