Greatest Common Factor of 721, 505, 42

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

• Greatest Common Factor of 721, 505, 42 by common division method
• Greatest Common Factor of 721, 505, 42 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 721

List of positive integer factors of 721 that divides 721 without a remainder.

1,7,103,721

Factors of 505

List of positive integer factors of 505 that divides 505 without a remainder.

1,5,101,505

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Greatest Common Factor

We found the factors 721,505,42 . The biggest common factor number is the GCF number.
So the greatest common factor 721,505,42 is 1.

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

• GCF of 856, 619, 52
• GCF of 343, 290, 56
• GCF of 965, 168, 39
• GCF of 711, 550, 99
• GCF of 146, 699, 27

1. What is the GCF of 721, 505, 42?

Answer: GCF of 721, 505, 42 is 1.

2. How to Find the GCF of 721, 505, 42

Answer: Greatest Common Factor(GCF) of 721, 505, 42 = 1

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

Step 2: Then multiply all the prime factors GCF(721, 505, 42) = 1.