What is the Greatest Common Factor of 71924 and 71940?

Greatest common factor (GCF) of 71924 and 71940 is 4.

GCF(71924,71940) = 4

We will now calculate the prime factors of 71924 and 71940, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 71924 and 71940.

How to find the GCF of 71924 and 71940?

We will first find the prime factorization of 71924 and 71940. After we will calculate the factors of 71924 and 71940 and find the biggest common factor number .

Step-1: Prime Factorization of 71924

Prime factors of 71924 are 2, 17981. Prime factorization of 71924 in exponential form is:

71924 = 2² × 17981¹

Step-2: Prime Factorization of 71940

Prime factors of 71940 are 2, 3, 5, 11, 109. Prime factorization of 71940 in exponential form is:

71940 = 2² × 3¹ × 5¹ × 11¹ × 109¹

Step-3: Factors of 71924

List of positive integer factors of 71924 that divides 71924 without a remainder.

1, 2, 4, 17981, 35962

Step-4: Factors of 71940

List of positive integer factors of 71940 that divides 71924 without a remainder.

1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 109, 110, 132, 165, 218, 220, 327, 330, 436, 545, 654, 660, 1090, 1199, 1308, 1635, 2180, 2398, 3270, 3597, 4796, 5995, 6540, 7194, 11990, 14388, 17985, 23980, 35970

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 71924 and 71940. The biggest common factor number is the GCF number.
So the greatest common factor 71924 and 71940 is 4.

Also check out the Least Common Multiple of 71924 and 71940