Greatest Common Factor of 438 and 445

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 438, 445 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 438 and 445 is 1.

GCF(438,445) = 1

GCF of 438 and 445

Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;

GCF of:
and

Greatest Common Factor of 438 and 445

GCF of 438 and 445 is 1

Prime Factorization of 438


2 438
3 219
73 73
1

Prime factors of 438 are 2,3,73. Prime factorization of 438 in exponential form is:

438 = 21×31×731

Prime Factorization of 445


5 445
89 89
1

Prime factors of 445 are 5,89. Prime factorization of 445 in exponential form is:

445 = 51×891

∴ So by taking common prime factors GCF of 438 and 445 is 1

Greatest Common Factor of 438 and 445 by matching factors method

Factors of 438

List of positive integer factors of 438 that divides 438 without a remainder.

1,2,3,6,73,146,219,438

Factors of 445

List of positive integer factors of 445 that divides 445 without a remainder.

1,5,89,445

Greatest Common Factor

We found the factors and prime factorization of 438 and 445. The biggest common factor number is the GCF number.
So the greatest common factor 438 and 445 is 1.

Also check out the Least Common Multiple of 438 and 445

Properties of GCF 438 and 445

(i) The GCF of 438 and 445 is associative

GCF of 438 and 445 = GCF of 445 and 438

Related Greatest Common Factor of 438

Related Greatest Common Factor of 445

Frequently Asked Questions on GCF of 438 and 445

1. What is the GCF of 438 and 445?

Answer: GCF of 438 and 445 is 1.

2. What are the Factors of 438?

Answer: Factors of 438 are 1, 2, 3, 6, 73, 146, 219, 438. There are 8 integers that are factors of 438. The greatest factor of 438 is 438.

3. What are the Factors of 445?

Answer: Factors of 445 are 1, 5, 89, 445. There are 4 integers that are factors of 445. The greatest factor of 445 is 445.

4. How to Find the GCF of 438 and 445?

Answer:

Greatest Common Factor of 438 and 445 = 1

Step 1: Find the prime factorization of 438

438 = 2 x 3 x 73

Step 2: Find the prime factorization of 445

445 = 5 x 89

Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:

GCF = = 1

Step 4: Therefore, the greatest common factor of 438 and 445 is 1