Greatest Common Factor of 81, 71, 98, 630

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

• Greatest Common Factor of 81, 71, 98, 630 by common division method
• Greatest Common Factor of 81, 71, 98, 630 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 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Factors of 98

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

1,2,7,14,49,98

Factors of 630

List of positive integer factors of 630 that divides 630 without a remainder.

1,2,3,5,6,7,9,10,14,15,18,21,30,35,42,45,63,70,90,105,126,210,315,630

Greatest Common Factor

We found the factors 81,71,98,630 . The biggest common factor number is the GCF number.
So the greatest common factor 81,71,98,630 is 1.

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

• GCF of 93, 89, 56, 330
• GCF of 50, 58, 24, 784
• GCF of 94, 35, 40, 313
• GCF of 90, 88, 88, 182
• GCF of 45, 35, 95, 399

1. What is the GCF of 81, 71, 98, 630?

Answer: GCF of 81, 71, 98, 630 is 1.

2. How to Find the GCF of 81, 71, 98, 630

Answer: Greatest Common Factor(GCF) of 81, 71, 98, 630 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 71, 98, 630) = 1.