Greatest Common Factor of 30, 91, 63, 438

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

• Greatest Common Factor of 30, 91, 63, 438 by common division method
• Greatest Common Factor of 30, 91, 63, 438 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 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Factors of 438

List of positive integer factors of 438 that divides 438 without a remainder.

1,2,3,6,73,146,219,438

Greatest Common Factor

We found the factors 30,91,63,438 . The biggest common factor number is the GCF number.
So the greatest common factor 30,91,63,438 is 1.

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

• GCF of 53, 63, 36, 787
• GCF of 81, 16, 74, 501
• GCF of 14, 63, 80, 583
• GCF of 65, 60, 43, 352
• GCF of 72, 95, 11, 872

1. What is the GCF of 30, 91, 63, 438?

Answer: GCF of 30, 91, 63, 438 is 1.

2. How to Find the GCF of 30, 91, 63, 438

Answer: Greatest Common Factor(GCF) of 30, 91, 63, 438 = 1

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

Step 2: Then multiply all the prime factors GCF(30, 91, 63, 438) = 1.