Greatest Common Factor of 21, 17, 70, 94

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

• Greatest Common Factor of 21, 17, 70, 94 by common division method
• Greatest Common Factor of 21, 17, 70, 94 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 17

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

1,17

Factors of 70

List of positive integer factors of 70 that divides 70 without a remainder.

1,2,5,7,10,14,35,70

Factors of 94

List of positive integer factors of 94 that divides 94 without a remainder.

1,2,47,94

Greatest Common Factor

We found the factors 21,17,70,94 . The biggest common factor number is the GCF number.
So the greatest common factor 21,17,70,94 is 1.

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

• GCF of 75, 83, 14, 82
• GCF of 89, 63, 33, 97
• GCF of 82, 25, 31, 71
• GCF of 11, 85, 98, 71
• GCF of 61, 90, 98, 29

1. What is the GCF of 21, 17, 70, 94?

Answer: GCF of 21, 17, 70, 94 is 1.

2. How to Find the GCF of 21, 17, 70, 94

Answer: Greatest Common Factor(GCF) of 21, 17, 70, 94 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 17, 70, 94) = 1.