Greatest Common Factor of 21, 98, 17, 158

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

• Greatest Common Factor of 21, 98, 17, 158 by common division method
• Greatest Common Factor of 21, 98, 17, 158 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 98

List of positive integer factors of 98 that divides 98 without a remainder.

1,2,7,14,49,98

Factors of 17

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

1,17

Factors of 158

List of positive integer factors of 158 that divides 158 without a remainder.

1,2,79,158

Greatest Common Factor

We found the factors 21,98,17,158 . The biggest common factor number is the GCF number.
So the greatest common factor 21,98,17,158 is 1.

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

• GCF of 85, 69, 36, 335
• GCF of 56, 32, 99, 787
• GCF of 19, 48, 87, 813
• GCF of 45, 92, 63, 999
• GCF of 60, 53, 85, 919

1. What is the GCF of 21, 98, 17, 158?

Answer: GCF of 21, 98, 17, 158 is 1.

2. How to Find the GCF of 21, 98, 17, 158

Answer: Greatest Common Factor(GCF) of 21, 98, 17, 158 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 98, 17, 158) = 1.