Greatest Common Factor of 978 and 985

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 978, 985 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 978 and 985 is 1.

GCF(978,985) = 1

GCF of 978 and 985

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

GCF of:
and

Greatest Common Factor of 978 and 985

GCF of 978 and 985 is 1

Prime Factorization of 978


2 978
3 489
163 163
1

Prime factors of 978 are 2,3,163. Prime factorization of 978 in exponential form is:

978 = 21×31×1631

Prime Factorization of 985


5 985
197 197
1

Prime factors of 985 are 5,197. Prime factorization of 985 in exponential form is:

985 = 51×1971

∴ So by taking common prime factors GCF of 978 and 985 is 1

Greatest Common Factor of 978 and 985 by matching factors method

Factors of 978

List of positive integer factors of 978 that divides 978 without a remainder.

1,2,3,6,163,326,489,978

Factors of 985

List of positive integer factors of 985 that divides 985 without a remainder.

1,5,197,985

Greatest Common Factor

We found the factors and prime factorization of 978 and 985. The biggest common factor number is the GCF number.
So the greatest common factor 978 and 985 is 1.

Also check out the Least Common Multiple of 978 and 985

Properties of GCF 978 and 985

(i) The GCF of 978 and 985 is associative

GCF of 978 and 985 = GCF of 985 and 978

Related Greatest Common Factor of 978

Related Greatest Common Factor of 985

Frequently Asked Questions on GCF of 978 and 985

1. What is the GCF of 978 and 985?

Answer: GCF of 978 and 985 is 1.

2. What are the Factors of 978?

Answer: Factors of 978 are 1, 2, 3, 6, 163, 326, 489, 978. There are 8 integers that are factors of 978. The greatest factor of 978 is 978.

3. What are the Factors of 985?

Answer: Factors of 985 are 1, 5, 197, 985. There are 4 integers that are factors of 985. The greatest factor of 985 is 985.

4. How to Find the GCF of 978 and 985?

Answer:

Greatest Common Factor of 978 and 985 = 1

Step 1: Find the prime factorization of 978

978 = 2 x 3 x 163

Step 2: Find the prime factorization of 985

985 = 5 x 197

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 978 and 985 is 1