Greatest Common Factor of 23, 49, 30, 21, 63

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

• Greatest Common Factor of 23, 49, 30, 21, 63 by common division method
• Greatest Common Factor of 23, 49, 30, 21, 63 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 23

List of positive integer factors of 23 that divides 23 without a remainder.

1,23

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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Greatest Common Factor

We found the factors 23,49,30,21,63 . The biggest common factor number is the GCF number.
So the greatest common factor 23,49,30,21,63 is 1.

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

• GCF of 48, 37, 15, 93, 37
• GCF of 74, 82, 83, 97, 89
• GCF of 95, 85, 60, 52, 60
• GCF of 76, 69, 20, 90, 87
• GCF of 18, 19, 59, 56, 73

1. What is the GCF of 23, 49, 30, 21, 63?

Answer: GCF of 23, 49, 30, 21, 63 is 1.

2. How to Find the GCF of 23, 49, 30, 21, 63

Answer: Greatest Common Factor(GCF) of 23, 49, 30, 21, 63 = 1

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

Step 2: Then multiply all the prime factors GCF(23, 49, 30, 21, 63) = 1.