Greatest Common Factor of 15, 49, 30, 231

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

• Greatest Common Factor of 15, 49, 30, 231 by common division method
• Greatest Common Factor of 15, 49, 30, 231 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 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 49

List of positive integer factors of 49 that divides 49 without a remainder.

1,7,49

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 231

List of positive integer factors of 231 that divides 231 without a remainder.

1,3,7,11,21,33,77,231

Greatest Common Factor

We found the factors 15,49,30,231 . The biggest common factor number is the GCF number.
So the greatest common factor 15,49,30,231 is 1.

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

• GCF of 97, 90, 68, 810
• GCF of 59, 94, 97, 946
• GCF of 98, 19, 10, 428
• GCF of 59, 70, 67, 599
• GCF of 18, 81, 74, 255

1. What is the GCF of 15, 49, 30, 231?

Answer: GCF of 15, 49, 30, 231 is 1.

2. How to Find the GCF of 15, 49, 30, 231

Answer: Greatest Common Factor(GCF) of 15, 49, 30, 231 = 1

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

Step 2: Then multiply all the prime factors GCF(15, 49, 30, 231) = 1.