Greatest Common Factor of 42, 251, 780

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

• Greatest Common Factor of 42, 251, 780 by common division method
• Greatest Common Factor of 42, 251, 780 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 42

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

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

Factors of 251

List of positive integer factors of 251 that divides 251 without a remainder.

1,251

Factors of 780

List of positive integer factors of 780 that divides 780 without a remainder.

1,2,3,4,5,6,10,12,13,15,20,26,30,39,52,60,65,78,130,156,195,260,390,780

Greatest Common Factor

We found the factors 42,251,780 . The biggest common factor number is the GCF number.
So the greatest common factor 42,251,780 is 1.

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

• GCF of 17, 333, 772
• GCF of 39, 914, 655
• GCF of 32, 699, 228
• GCF of 72, 158, 153
• GCF of 70, 990, 560

1. What is the GCF of 42, 251, 780?

Answer: GCF of 42, 251, 780 is 1.

2. How to Find the GCF of 42, 251, 780

Answer: Greatest Common Factor(GCF) of 42, 251, 780 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 251, 780) = 1.