Greatest Common Factor of 77, 64, 42, 655

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

• Greatest Common Factor of 77, 64, 42, 655 by common division method
• Greatest Common Factor of 77, 64, 42, 655 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 64

List of positive integer factors of 64 that divides 64 without a remainder.

1,2,4,8,16,32,64

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 655

List of positive integer factors of 655 that divides 655 without a remainder.

1,5,131,655

Greatest Common Factor

We found the factors 77,64,42,655 . The biggest common factor number is the GCF number.
So the greatest common factor 77,64,42,655 is 1.

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

• GCF of 88, 46, 96, 859
• GCF of 71, 11, 58, 973
• GCF of 91, 21, 95, 576
• GCF of 45, 33, 39, 339
• GCF of 17, 38, 77, 528

1. What is the GCF of 77, 64, 42, 655?

Answer: GCF of 77, 64, 42, 655 is 1.

2. How to Find the GCF of 77, 64, 42, 655

Answer: Greatest Common Factor(GCF) of 77, 64, 42, 655 = 1

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

Step 2: Then multiply all the prime factors GCF(77, 64, 42, 655) = 1.