Greatest Common Factor of 781, 42, 13

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

• Greatest Common Factor of 781, 42, 13 by common division method
• Greatest Common Factor of 781, 42, 13 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 781

List of positive integer factors of 781 that divides 781 without a remainder.

1,11,71,781

Factors of 42

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

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

Factors of 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Greatest Common Factor

We found the factors 781,42,13 . The biggest common factor number is the GCF number.
So the greatest common factor 781,42,13 is 1.

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

• GCF of 403, 17, 13
• GCF of 178, 94, 40
• GCF of 168, 43, 28
• GCF of 609, 12, 12
• GCF of 700, 45, 29

1. What is the GCF of 781, 42, 13?

Answer: GCF of 781, 42, 13 is 1.

2. How to Find the GCF of 781, 42, 13

Answer: Greatest Common Factor(GCF) of 781, 42, 13 = 1

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

Step 2: Then multiply all the prime factors GCF(781, 42, 13) = 1.