Greatest Common Factor of 835 and 840

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 835, 840 i.e. 5 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 835 and 840 is 5.

GCF(835,840) = 5

GCF of 835 and 840

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

GCF of:
and

Greatest Common Factor of 835 and 840

GCF of 835 and 840 is 5

Prime Factorization of 835


5 835
167 167
1

Prime factors of 835 are 5,167. Prime factorization of 835 in exponential form is:

835 = 51×1671

Prime Factorization of 840


2 840
2 420
2 210
3 105
5 35
7 7
1

Prime factors of 840 are 2,3,5,7. Prime factorization of 840 in exponential form is:

840 = 23×31×51×71

∴ So by taking common prime factors GCF of 835 and 840 is 5

Greatest Common Factor of 835 and 840 by matching factors method

Factors of 835

List of positive integer factors of 835 that divides 835 without a remainder.

1,5,167,835

Factors of 840

List of positive integer factors of 840 that divides 840 without a remainder.

1,2,3,4,5,6,7,8,10,12,14,15,20,21,24,28,30,35,40,42,56,60,70,84,105,120,140,168,210,280,420,840

Greatest Common Factor

We found the factors and prime factorization of 835 and 840. The biggest common factor number is the GCF number.
So the greatest common factor 835 and 840 is 5.

Also check out the Least Common Multiple of 835 and 840

Properties of GCF 835 and 840

(i) The GCF of 835 and 840 is associative

GCF of 835 and 840 = GCF of 840 and 835

Related Greatest Common Factor of 835

Related Greatest Common Factor of 840

Frequently Asked Questions on GCF of 835 and 840

1. What is the GCF of 835 and 840?

Answer: GCF of 835 and 840 is 5.

2. What are the Factors of 835?

Answer: Factors of 835 are 1, 5, 167, 835. There are 4 integers that are factors of 835. The greatest factor of 835 is 835.

3. What are the Factors of 840?

Answer: Factors of 840 are 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840. There are 32 integers that are factors of 840. The greatest factor of 840 is 840.

4. How to Find the GCF of 835 and 840?

Answer:

Greatest Common Factor of 835 and 840 = 5

Step 1: Find the prime factorization of 835

835 = 5 x 167

Step 2: Find the prime factorization of 840

840 = 2 x 2 x 2 x 3 x 5 x 7

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

GCF = 5

Step 4: Therefore, the greatest common factor of 835 and 840 is 5