Greatest Common Factor of 42, 90, 98, 243

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

• Greatest Common Factor of 42, 90, 98, 243 by common division method
• Greatest Common Factor of 42, 90, 98, 243 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 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1,2,3,5,6,9,10,15,18,30,45,90

Factors of 98

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

1,2,7,14,49,98

Factors of 243

List of positive integer factors of 243 that divides 243 without a remainder.

1,3,9,27,81,243

Greatest Common Factor

We found the factors 42,90,98,243 . The biggest common factor number is the GCF number.
So the greatest common factor 42,90,98,243 is 1.

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

• GCF of 29, 80, 29, 382
• GCF of 43, 33, 10, 999
• GCF of 82, 53, 47, 243
• GCF of 11, 49, 99, 630
• GCF of 19, 84, 51, 666

1. What is the GCF of 42, 90, 98, 243?

Answer: GCF of 42, 90, 98, 243 is 1.

2. How to Find the GCF of 42, 90, 98, 243

Answer: Greatest Common Factor(GCF) of 42, 90, 98, 243 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 90, 98, 243) = 1.