Greatest Common Factor of 665, 391, 42

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

• Greatest Common Factor of 665, 391, 42 by common division method
• Greatest Common Factor of 665, 391, 42 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 665

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

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

Factors of 391

List of positive integer factors of 391 that divides 391 without a remainder.

1,17,23,391

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 665,391,42 . The biggest common factor number is the GCF number.
So the greatest common factor 665,391,42 is 1.

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

• GCF of 792, 298, 43
• GCF of 687, 305, 88
• GCF of 739, 832, 70
• GCF of 455, 949, 93
• GCF of 994, 592, 40

1. What is the GCF of 665, 391, 42?

Answer: GCF of 665, 391, 42 is 1.

2. How to Find the GCF of 665, 391, 42

Answer: Greatest Common Factor(GCF) of 665, 391, 42 = 1

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

Step 2: Then multiply all the prime factors GCF(665, 391, 42) = 1.