Greatest Common Factor of 15, 63, 43, 85

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

• Greatest Common Factor of 15, 63, 43, 85 by common division method
• Greatest Common Factor of 15, 63, 43, 85 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 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Factors of 43

List of positive integer factors of 43 that divides 43 without a remainder.

1,43

Factors of 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

Greatest Common Factor

We found the factors 15,63,43,85 . The biggest common factor number is the GCF number.
So the greatest common factor 15,63,43,85 is 1.

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

• GCF of 31, 72, 42, 55
• GCF of 28, 15, 25, 84
• GCF of 15, 89, 35, 29
• GCF of 95, 18, 54, 43
• GCF of 44, 17, 64, 34

1. What is the GCF of 15, 63, 43, 85?

Answer: GCF of 15, 63, 43, 85 is 1.

2. How to Find the GCF of 15, 63, 43, 85

Answer: Greatest Common Factor(GCF) of 15, 63, 43, 85 = 1

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

Step 2: Then multiply all the prime factors GCF(15, 63, 43, 85) = 1.