Greatest Common Factor of 42, 19, 55, 149

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

• Greatest Common Factor of 42, 19, 55, 149 by common division method
• Greatest Common Factor of 42, 19, 55, 149 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 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 149

List of positive integer factors of 149 that divides 149 without a remainder.

1,149

Greatest Common Factor

We found the factors 42,19,55,149 . The biggest common factor number is the GCF number.
So the greatest common factor 42,19,55,149 is 1.

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

• GCF of 15, 36, 57, 765
• GCF of 65, 79, 31, 490
• GCF of 91, 33, 91, 734
• GCF of 71, 30, 42, 792
• GCF of 84, 47, 25, 625

1. What is the GCF of 42, 19, 55, 149?

Answer: GCF of 42, 19, 55, 149 is 1.

2. How to Find the GCF of 42, 19, 55, 149

Answer: Greatest Common Factor(GCF) of 42, 19, 55, 149 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 19, 55, 149) = 1.