Greatest Common Factor of 42, 51, 398

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

• Greatest Common Factor of 42, 51, 398 by common division method
• Greatest Common Factor of 42, 51, 398 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 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 398

List of positive integer factors of 398 that divides 398 without a remainder.

1,2,199,398

Greatest Common Factor

We found the factors 42,51,398 . The biggest common factor number is the GCF number.
So the greatest common factor 42,51,398 is 1.

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

• GCF of 99, 65, 486
• GCF of 49, 55, 772
• GCF of 74, 49, 799
• GCF of 79, 20, 393
• GCF of 89, 59, 794

1. What is the GCF of 42, 51, 398?

Answer: GCF of 42, 51, 398 is 1.

2. How to Find the GCF of 42, 51, 398

Answer: Greatest Common Factor(GCF) of 42, 51, 398 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 51, 398) = 1.