Greatest Common Factor of 98, 21, 25, 154

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

• Greatest Common Factor of 98, 21, 25, 154 by common division method
• Greatest Common Factor of 98, 21, 25, 154 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 98

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

1,2,7,14,49,98

Factors of 21

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

1,3,7,21

Factors of 25

List of positive integer factors of 25 that divides 25 without a remainder.

1,5,25

Factors of 154

List of positive integer factors of 154 that divides 154 without a remainder.

1,2,7,11,14,22,77,154

Greatest Common Factor

We found the factors 98,21,25,154 . The biggest common factor number is the GCF number.
So the greatest common factor 98,21,25,154 is 1.

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

• GCF of 75, 58, 74, 665
• GCF of 28, 13, 71, 339
• GCF of 65, 23, 91, 540
• GCF of 68, 31, 97, 163
• GCF of 97, 15, 38, 950

1. What is the GCF of 98, 21, 25, 154?

Answer: GCF of 98, 21, 25, 154 is 1.

2. How to Find the GCF of 98, 21, 25, 154

Answer: Greatest Common Factor(GCF) of 98, 21, 25, 154 = 1

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

Step 2: Then multiply all the prime factors GCF(98, 21, 25, 154) = 1.