Greatest Common Factor of 420, 668, 139

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

• Greatest Common Factor of 420, 668, 139 by common division method
• Greatest Common Factor of 420, 668, 139 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 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Factors of 668

List of positive integer factors of 668 that divides 668 without a remainder.

1,2,4,167,334,668

Factors of 139

List of positive integer factors of 139 that divides 139 without a remainder.

1,139

Greatest Common Factor

We found the factors 420,668,139 . The biggest common factor number is the GCF number.
So the greatest common factor 420,668,139 is 1.

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

• GCF of 800, 658, 750
• GCF of 967, 941, 419
• GCF of 381, 402, 717
• GCF of 998, 760, 894
• GCF of 707, 211, 306

1. What is the GCF of 420, 668, 139?

Answer: GCF of 420, 668, 139 is 1.

2. How to Find the GCF of 420, 668, 139

Answer: Greatest Common Factor(GCF) of 420, 668, 139 = 1

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

Step 2: Then multiply all the prime factors GCF(420, 668, 139) = 1.