Greatest Common Factor of 30, 30, 21, 137

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

• Greatest Common Factor of 30, 30, 21, 137 by common division method
• Greatest Common Factor of 30, 30, 21, 137 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 30

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

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

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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 137

List of positive integer factors of 137 that divides 137 without a remainder.

1,137

Greatest Common Factor

We found the factors 30,30,21,137 . The biggest common factor number is the GCF number.
So the greatest common factor 30,30,21,137 is 1.

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

• GCF of 20, 74, 46, 975
• GCF of 16, 47, 71, 729
• GCF of 42, 86, 19, 798
• GCF of 61, 69, 79, 653
• GCF of 62, 43, 76, 715

1. What is the GCF of 30, 30, 21, 137?

Answer: GCF of 30, 30, 21, 137 is 1.

2. How to Find the GCF of 30, 30, 21, 137

Answer: Greatest Common Factor(GCF) of 30, 30, 21, 137 = 1

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

Step 2: Then multiply all the prime factors GCF(30, 30, 21, 137) = 1.