Greatest Common Factor of 42, 89, 49, 45

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 42, 89, 49, 45 by common division method
• Greatest Common Factor of 42, 89, 49, 45 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 89

List of positive integer factors of 89 that divides 89 without a remainder.

1,89

Factors of 49

List of positive integer factors of 49 that divides 49 without a remainder.

1,7,49

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Greatest Common Factor

We found the factors 42,89,49,45 . The biggest common factor number is the GCF number.
So the greatest common factor 42,89,49,45 is 1.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 77, 20, 21, 68
• GCF of 32, 63, 57, 79
• GCF of 40, 82, 83, 68
• GCF of 21, 12, 64, 24
• GCF of 23, 61, 32, 45

1. What is the GCF of 42, 89, 49, 45?

Answer: GCF of 42, 89, 49, 45 is 1.

2. How to Find the GCF of 42, 89, 49, 45

Answer: Greatest Common Factor(GCF) of 42, 89, 49, 45 = 1

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(42, 89, 49, 45) = 1.