Online GCD Calculator is useful to find the GCD of 620, 355, 342, 840 quickly. Get the easiest ways to solve the greatest common divisor of 620, 355, 342, 840 i.e 1 in different methods as follows.
Given Input numbers are 620, 355, 342, 840
In the factoring method, we have to find the divisors of all numbers
Divisors of 620 :
The positive integer divisors of 620 that completely divides 620 are.
1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
Divisors of 355 :
The positive integer divisors of 355 that completely divides 355 are.
1, 5, 71, 355
Divisors of 342 :
The positive integer divisors of 342 that completely divides 342 are.
1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342
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
GCD of numbers is the greatest common divisor
So, the GCD (620, 355, 342, 840) = 1.
Given numbers are 620, 355, 342, 840
The list of prime factors of all numbers are
Prime factors of 620 are 2 x 2 x 5 x 31
Prime factors of 355 are 5 x 71
Prime factors of 342 are 2 x 3 x 3 x 19
Prime factors of 840 are 2 x 2 x 2 x 3 x 5 x 7
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 620, 355, 342, 840
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(620, 355) = 44020
GCD(620, 355) = ( 620 x 355 ) / 44020
= 620 / 355
= 620
Step2:
LCM(5, 342) = 1710
GCD(5, 342) = ( 5 x 342 ) / 1710
= 5 / 342
= 5
Step3:
LCM(1, 840) = 840
GCD(1, 840) = ( 1 x 840 ) / 840
= 1 / 840
= 1
So, Greatest Common Divisor of 620, 355, 342, 840 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 620, 355, 342, 840
The greatest common divisor of numbers 620, 355, 342, 840 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 620, 355, 342, 840 is 1.
1. What is the GCD of 620, 355, 342, 840?
GCD of given numbers 620, 355, 342, 840 is 1
2. How to calculate the greatest common divisor of 620, 355, 342, 840?
We can find the highest common divisor of 620, 355, 342, 840 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 620, 355, 342, 840 i.e 1.
3. How can I use the GCD of 620, 355, 342, 840Calculator?
Out the numbers 620, 355, 342, 840 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.