GCD of 840, 785, 808, 690 Calculator

Given Input numbers are 840, 785, 808, 690

In the factoring method, we have to find the divisors of all numbers

Divisors of 840 :

The positive integer divisors of 840 that completely divides 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

Divisors of 785 :

The positive integer divisors of 785 that completely divides 785 are.

1, 5, 157, 785

Divisors of 808 :

The positive integer divisors of 808 that completely divides 808 are.

1, 2, 4, 8, 101, 202, 404, 808

Divisors of 690 :

The positive integer divisors of 690 that completely divides 690 are.

1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690

GCD of numbers is the greatest common divisor

So, the GCD (840, 785, 808, 690) = 1.

Given numbers are 840, 785, 808, 690

The list of prime factors of all numbers are

Prime factors of 840 are 2 x 2 x 2 x 3 x 5 x 7

Prime factors of 785 are 5 x 157

Prime factors of 808 are 2 x 2 x 2 x 101

Prime factors of 690 are 2 x 3 x 5 x 23

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 840, 785, 808, 690

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(840, 785) = 131880

GCD(840, 785) = ( 840 x 785 ) / 131880

= 840 / 785

= 840

Step2:

LCM(5, 808) = 4040

GCD(5, 808) = ( 5 x 808 ) / 4040

= 5 / 808

= 5

Step3:

LCM(1, 690) = 690

GCD(1, 690) = ( 1 x 690 ) / 690

= 1 / 690

= 1

So, Greatest Common Divisor of 840, 785, 808, 690 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 594, 345, 813, 721
• GCD of 522, 153, 252, 531
• GCD of 998, 222, 927, 818
• GCD of 793, 843, 477, 664
• GCD of 473, 215, 494, 302

Given numbers are 840, 785, 808, 690
The greatest common divisor of numbers 840, 785, 808, 690 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 840, 785, 808, 690 is 1.

1. What is the GCD of 840, 785, 808, 690?

GCD of given numbers 840, 785, 808, 690 is 1

2. How to calculate the greatest common divisor of 840, 785, 808, 690?

We can find the highest common divisor of 840, 785, 808, 690 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 840, 785, 808, 690 i.e 1.

3. How can I use the GCD of 840, 785, 808, 690Calculator?

Out the numbers 840, 785, 808, 690 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.