Greatest Common Factor of 42, 49, 30, 921

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

• Greatest Common Factor of 42, 49, 30, 921 by common division method
• Greatest Common Factor of 42, 49, 30, 921 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 49

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

1,7,49

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 921

List of positive integer factors of 921 that divides 921 without a remainder.

1,3,307,921

Greatest Common Factor

We found the factors 42,49,30,921 . The biggest common factor number is the GCF number.
So the greatest common factor 42,49,30,921 is 1.

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

• GCF of 19, 38, 45, 557
• GCF of 76, 23, 11, 750
• GCF of 45, 76, 44, 473
• GCF of 20, 90, 40, 619
• GCF of 38, 96, 33, 848

1. What is the GCF of 42, 49, 30, 921?

Answer: GCF of 42, 49, 30, 921 is 1.

2. How to Find the GCF of 42, 49, 30, 921

Answer: Greatest Common Factor(GCF) of 42, 49, 30, 921 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 49, 30, 921) = 1.