GCD of 686, 721, 90, 755 Calculator

Given Input numbers are 686, 721, 90, 755

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

Divisors of 686 :

The positive integer divisors of 686 that completely divides 686 are.

1, 2, 7, 14, 49, 98, 343, 686

Divisors of 721 :

The positive integer divisors of 721 that completely divides 721 are.

1, 7, 103, 721

Divisors of 90 :

The positive integer divisors of 90 that completely divides 90 are.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

Divisors of 755 :

The positive integer divisors of 755 that completely divides 755 are.

1, 5, 151, 755

GCD of numbers is the greatest common divisor

So, the GCD (686, 721, 90, 755) = 1.

Given numbers are 686, 721, 90, 755

The list of prime factors of all numbers are

Prime factors of 686 are 2 x 7 x 7 x 7

Prime factors of 721 are 7 x 103

Prime factors of 90 are 2 x 3 x 3 x 5

Prime factors of 755 are 5 x 151

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

Given numbers are 686, 721, 90, 755

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

Apply this formula for all numbers.

Step1:

LCM(686, 721) = 70658

GCD(686, 721) = ( 686 x 721 ) / 70658

= 686 / 721

= 686

Step2:

LCM(7, 90) = 630

GCD(7, 90) = ( 7 x 90 ) / 630

= 7 / 90

= 7

Step3:

LCM(1, 755) = 755

GCD(1, 755) = ( 1 x 755 ) / 755

= 1 / 755

= 1

So, Greatest Common Divisor of 686, 721, 90, 755 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 116, 690, 99, 955
• GCD of 744, 765, 14, 819
• GCD of 808, 367, 72, 125
• GCD of 618, 362, 79, 339
• GCD of 633, 344, 74, 741

Given numbers are 686, 721, 90, 755
The greatest common divisor of numbers 686, 721, 90, 755 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 686, 721, 90, 755 is 1.

1. What is the GCD of 686, 721, 90, 755?

GCD of given numbers 686, 721, 90, 755 is 1

2. How to calculate the greatest common divisor of 686, 721, 90, 755?

We can find the highest common divisor of 686, 721, 90, 755 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 686, 721, 90, 755 i.e 1.

3. How can I use the GCD of 686, 721, 90, 755Calculator?

Out the numbers 686, 721, 90, 755 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.