What is the Greatest Common Factor of 42090 and 42100?

Greatest common factor (GCF) of 42090 and 42100 is 10.

GCF(42090,42100) = 10

We will now calculate the prime factors of 42090 and 42100, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42090 and 42100.

How to find the GCF of 42090 and 42100?

We will first find the prime factorization of 42090 and 42100. After we will calculate the factors of 42090 and 42100 and find the biggest common factor number .

Step-1: Prime Factorization of 42090

Prime factors of 42090 are 2, 3, 5, 23, 61. Prime factorization of 42090 in exponential form is:

42090 = 2¹ × 3¹ × 5¹ × 23¹ × 61¹

Step-2: Prime Factorization of 42100

Prime factors of 42100 are 2, 5, 421. Prime factorization of 42100 in exponential form is:

42100 = 2² × 5² × 421¹

Step-3: Factors of 42090

List of positive integer factors of 42090 that divides 42090 without a remainder.

1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 61, 69, 115, 122, 138, 183, 230, 305, 345, 366, 610, 690, 915, 1403, 1830, 2806, 4209, 7015, 8418, 14030, 21045

Step-4: Factors of 42100

List of positive integer factors of 42100 that divides 42090 without a remainder.

1, 2, 4, 5, 10, 20, 25, 50, 100, 421, 842, 1684, 2105, 4210, 8420, 10525, 21050

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42090 and 42100. The biggest common factor number is the GCF number.
So the greatest common factor 42090 and 42100 is 10.

Also check out the Least Common Multiple of 42090 and 42100