Greatest Common Factor of 77, 77, 91, 638

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

• Greatest Common Factor of 77, 77, 91, 638 by common division method
• Greatest Common Factor of 77, 77, 91, 638 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 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Factors of 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Factors of 91

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

1,7,13,91

Factors of 638

List of positive integer factors of 638 that divides 638 without a remainder.

1,2,11,22,29,58,319,638

Greatest Common Factor

We found the factors 77,77,91,638 . The biggest common factor number is the GCF number.
So the greatest common factor 77,77,91,638 is 1.

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

• GCF of 99, 45, 77, 724
• GCF of 28, 35, 60, 246
• GCF of 25, 44, 48, 163
• GCF of 11, 82, 21, 273
• GCF of 10, 64, 57, 148

1. What is the GCF of 77, 77, 91, 638?

Answer: GCF of 77, 77, 91, 638 is 1.

2. How to Find the GCF of 77, 77, 91, 638

Answer: Greatest Common Factor(GCF) of 77, 77, 91, 638 = 1

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

Step 2: Then multiply all the prime factors GCF(77, 77, 91, 638) = 1.