Greatest Common Factor of 45, 80, 621

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

• Greatest Common Factor of 45, 80, 621 by common division method
• Greatest Common Factor of 45, 80, 621 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 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 621

List of positive integer factors of 621 that divides 621 without a remainder.

1,3,9,23,27,69,207,621

Greatest Common Factor

We found the factors 45,80,621 . The biggest common factor number is the GCF number.
So the greatest common factor 45,80,621 is 1.

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

• GCF of 43, 66, 398
• GCF of 48, 11, 695
• GCF of 47, 44, 443
• GCF of 62, 29, 551
• GCF of 88, 87, 569

1. What is the GCF of 45, 80, 621?

Answer: GCF of 45, 80, 621 is 1.

2. How to Find the GCF of 45, 80, 621

Answer: Greatest Common Factor(GCF) of 45, 80, 621 = 1

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

Step 2: Then multiply all the prime factors GCF(45, 80, 621) = 1.