Greatest Common Factor of 21, 98, 398

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

• Greatest Common Factor of 21, 98, 398 by common division method
• Greatest Common Factor of 21, 98, 398 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 398

List of positive integer factors of 398 that divides 398 without a remainder.

1,2,199,398

Greatest Common Factor

We found the factors 21,98,398 . The biggest common factor number is the GCF number.
So the greatest common factor 21,98,398 is 1.

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

• GCF of 74, 85, 737
• GCF of 33, 95, 574
• GCF of 28, 10, 416
• GCF of 13, 22, 433
• GCF of 34, 69, 914

1. What is the GCF of 21, 98, 398?

Answer: GCF of 21, 98, 398 is 1.

2. How to Find the GCF of 21, 98, 398

Answer: Greatest Common Factor(GCF) of 21, 98, 398 = 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, 398) = 1.