Greatest Common Factor of 42, 781, 977, 638

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

• Greatest Common Factor of 42, 781, 977, 638 by common division method
• Greatest Common Factor of 42, 781, 977, 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 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 781

List of positive integer factors of 781 that divides 781 without a remainder.

1,11,71,781

Factors of 977

List of positive integer factors of 977 that divides 977 without a remainder.

1,977

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 42,781,977,638 . The biggest common factor number is the GCF number.
So the greatest common factor 42,781,977,638 is 1.

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

• GCF of 22, 181, 244, 294
• GCF of 27, 879, 603, 183
• GCF of 11, 720, 834, 192
• GCF of 54, 323, 774, 277
• GCF of 67, 631, 369, 984

1. What is the GCF of 42, 781, 977, 638?

Answer: GCF of 42, 781, 977, 638 is 1.

2. How to Find the GCF of 42, 781, 977, 638

Answer: Greatest Common Factor(GCF) of 42, 781, 977, 638 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 781, 977, 638) = 1.