Greatest Common Factor of 19, 66, 53, 42

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

• Greatest Common Factor of 19, 66, 53, 42 by common division method
• Greatest Common Factor of 19, 66, 53, 42 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 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Factors of 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 53

List of positive integer factors of 53 that divides 53 without a remainder.

1,53

Factors of 42

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

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

Greatest Common Factor

We found the factors 19,66,53,42 . The biggest common factor number is the GCF number.
So the greatest common factor 19,66,53,42 is 1.

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

• GCF of 77, 93, 14, 83
• GCF of 32, 42, 79, 97
• GCF of 87, 95, 10, 56
• GCF of 50, 56, 39, 65
• GCF of 10, 51, 28, 78

1. What is the GCF of 19, 66, 53, 42?

Answer: GCF of 19, 66, 53, 42 is 1.

2. How to Find the GCF of 19, 66, 53, 42

Answer: Greatest Common Factor(GCF) of 19, 66, 53, 42 = 1

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

Step 2: Then multiply all the prime factors GCF(19, 66, 53, 42) = 1.