Greatest Common Factor of 42, 13, 49, 509

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

• Greatest Common Factor of 42, 13, 49, 509 by common division method
• Greatest Common Factor of 42, 13, 49, 509 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 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 49

List of positive integer factors of 49 that divides 49 without a remainder.

1,7,49

Factors of 509

List of positive integer factors of 509 that divides 509 without a remainder.

1,509

Greatest Common Factor

We found the factors 42,13,49,509 . The biggest common factor number is the GCF number.
So the greatest common factor 42,13,49,509 is 1.

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

• GCF of 70, 10, 33, 518
• GCF of 65, 86, 64, 780
• GCF of 43, 38, 79, 558
• GCF of 82, 94, 85, 941
• GCF of 99, 99, 42, 134

1. What is the GCF of 42, 13, 49, 509?

Answer: GCF of 42, 13, 49, 509 is 1.

2. How to Find the GCF of 42, 13, 49, 509

Answer: Greatest Common Factor(GCF) of 42, 13, 49, 509 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 13, 49, 509) = 1.