Greatest Common Factor of 17, 57, 61, 42

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

• Greatest Common Factor of 17, 57, 61, 42 by common division method
• Greatest Common Factor of 17, 57, 61, 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 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 61

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

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 17,57,61,42 . The biggest common factor number is the GCF number.
So the greatest common factor 17,57,61,42 is 1.

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

• GCF of 33, 32, 57, 18
• GCF of 40, 60, 94, 71
• GCF of 25, 31, 80, 82
• GCF of 38, 24, 40, 15
• GCF of 58, 52, 91, 66

1. What is the GCF of 17, 57, 61, 42?

Answer: GCF of 17, 57, 61, 42 is 1.

2. How to Find the GCF of 17, 57, 61, 42

Answer: Greatest Common Factor(GCF) of 17, 57, 61, 42 = 1

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

Step 2: Then multiply all the prime factors GCF(17, 57, 61, 42) = 1.