What is the Greatest Common Factor of 64638 and 64642?

Greatest common factor (GCF) of 64638 and 64642 is 2.

GCF(64638,64642) = 2

We will now calculate the prime factors of 64638 and 64642, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 64638 and 64642.

How to find the GCF of 64638 and 64642?

We will first find the prime factorization of 64638 and 64642. After we will calculate the factors of 64638 and 64642 and find the biggest common factor number .

Step-1: Prime Factorization of 64638

Prime factors of 64638 are 2, 3, 7, 19. Prime factorization of 64638 in exponential form is:

64638 = 2¹ × 3⁵ × 7¹ × 19¹

Step-2: Prime Factorization of 64642

Prime factors of 64642 are 2, 32321. Prime factorization of 64642 in exponential form is:

64642 = 2¹ × 32321¹

Step-3: Factors of 64638

List of positive integer factors of 64638 that divides 64638 without a remainder.

1, 2, 3, 6, 7, 9, 14, 18, 19, 21, 27, 38, 42, 54, 57, 63, 81, 114, 126, 133, 162, 171, 189, 243, 266, 342, 378, 399, 486, 513, 567, 798, 1026, 1134, 1197, 1539, 1701, 2394, 3078, 3402, 3591, 4617, 7182, 9234, 10773, 21546, 32319

Step-4: Factors of 64642

List of positive integer factors of 64642 that divides 64638 without a remainder.

1, 2, 32321

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 64638 and 64642. The biggest common factor number is the GCF number.
So the greatest common factor 64638 and 64642 is 2.

Also check out the Least Common Multiple of 64638 and 64642