Greatest Common Factor of 45, 72, 17, 665

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

• Greatest Common Factor of 45, 72, 17, 665 by common division method
• Greatest Common Factor of 45, 72, 17, 665 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 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 665

List of positive integer factors of 665 that divides 665 without a remainder.

1,5,7,19,35,95,133,665

Greatest Common Factor

We found the factors 45,72,17,665 . The biggest common factor number is the GCF number.
So the greatest common factor 45,72,17,665 is 1.

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

• GCF of 58, 11, 82, 282
• GCF of 85, 65, 85, 932
• GCF of 50, 92, 36, 433
• GCF of 54, 12, 80, 369
• GCF of 88, 55, 49, 510

1. What is the GCF of 45, 72, 17, 665?

Answer: GCF of 45, 72, 17, 665 is 1.

2. How to Find the GCF of 45, 72, 17, 665

Answer: Greatest Common Factor(GCF) of 45, 72, 17, 665 = 1

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

Step 2: Then multiply all the prime factors GCF(45, 72, 17, 665) = 1.