Greatest Common Factor of 77, 66, 71, 391

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

• Greatest Common Factor of 77, 66, 71, 391 by common division method
• Greatest Common Factor of 77, 66, 71, 391 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 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Factors of 391

List of positive integer factors of 391 that divides 391 without a remainder.

1,17,23,391

Greatest Common Factor

We found the factors 77,66,71,391 . The biggest common factor number is the GCF number.
So the greatest common factor 77,66,71,391 is 1.

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

• GCF of 11, 55, 71, 193
• GCF of 33, 67, 94, 984
• GCF of 79, 42, 62, 501
• GCF of 71, 14, 78, 241
• GCF of 32, 97, 25, 431

1. What is the GCF of 77, 66, 71, 391?

Answer: GCF of 77, 66, 71, 391 is 1.

2. How to Find the GCF of 77, 66, 71, 391

Answer: Greatest Common Factor(GCF) of 77, 66, 71, 391 = 1

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

Step 2: Then multiply all the prime factors GCF(77, 66, 71, 391) = 1.