Greatest Common Factor of 81, 90, 25, 693

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

• Greatest Common Factor of 81, 90, 25, 693 by common division method
• Greatest Common Factor of 81, 90, 25, 693 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 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 25

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

1,5,25

Factors of 693

List of positive integer factors of 693 that divides 693 without a remainder.

1,3,7,9,11,21,33,63,77,99,231,693

Greatest Common Factor

We found the factors 81,90,25,693 . The biggest common factor number is the GCF number.
So the greatest common factor 81,90,25,693 is 1.

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

• GCF of 21, 43, 62, 694
• GCF of 13, 39, 80, 404
• GCF of 84, 96, 91, 748
• GCF of 36, 88, 53, 248
• GCF of 90, 51, 52, 757

1. What is the GCF of 81, 90, 25, 693?

Answer: GCF of 81, 90, 25, 693 is 1.

2. How to Find the GCF of 81, 90, 25, 693

Answer: Greatest Common Factor(GCF) of 81, 90, 25, 693 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 90, 25, 693) = 1.