What is the Greatest Common Factor of 42990 and 42998?

Greatest common factor (GCF) of 42990 and 42998 is 2.

GCF(42990,42998) = 2

We will now calculate the prime factors of 42990 and 42998, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42990 and 42998.

How to find the GCF of 42990 and 42998?

We will first find the prime factorization of 42990 and 42998. After we will calculate the factors of 42990 and 42998 and find the biggest common factor number .

Step-1: Prime Factorization of 42990

Prime factors of 42990 are 2, 3, 5, 1433. Prime factorization of 42990 in exponential form is:

42990 = 2¹ × 3¹ × 5¹ × 1433¹

Step-2: Prime Factorization of 42998

Prime factors of 42998 are 2, 21499. Prime factorization of 42998 in exponential form is:

42998 = 2¹ × 21499¹

Step-3: Factors of 42990

List of positive integer factors of 42990 that divides 42990 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 1433, 2866, 4299, 7165, 8598, 14330, 21495

Step-4: Factors of 42998

List of positive integer factors of 42998 that divides 42990 without a remainder.

1, 2, 21499

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42990 and 42998. The biggest common factor number is the GCF number.
So the greatest common factor 42990 and 42998 is 2.

Also check out the Least Common Multiple of 42990 and 42998