LCM of 620, 978, 646, 102
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 620, 978, 646, 102 with the LCM of Two or More Numbers Calculator. Here we are teaching you two different methods through which you can calculate the LCM of 620, 978, 646, 102. So, keep reading to learn more.
Given numbers are 620,978,646,102
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 620,978,646,102 is 97927140.
Find LCM of 620,978,646,102 with Prime Factorization
| 2 | 620, 978, 646, 102 |
| 3 | 310, 489, 323, 51 |
| 17 | 310, 163, 323, 17 |
| 310, 163, 19, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 17 x 310 x 163 x 19 x 1 = 97927140
Therefore, the lowest common multiple of 620,978,646,102 is 97927140.
LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
Firstly, we have to find the product of all the numbers.
620 x 978 x 646 x 102 = 39954273120
Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.
620 : 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
978 : 1, 2, 3, 6, 163, 326, 489, 978
646 : 1, 2, 17, 19, 34, 38, 323, 646
102 : 1, 2, 3, 6, 17, 34, 51, 102
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 620,978,646,102, is 2.
Now, the common factors can be found like this.
620:2x 2x 5x 31
978:2x 3x 163
646:2x 17x 19
102:2x 3x 17
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2x 3x 17 = 204
Therefore, the value for common factors is 204.
Now that we have all the elements of the formula, we can plug them in to calculate the LCM.
LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
LCM = 39954273120/(2x204)
LCM = 39954273120/408
LCM = 97927140
Thus, we can understand that the LCM of 620,978,646,102 is 97927140.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 620, 978, 646, 102
1. What is the LCM of 620, 978, 646, 102?
Answer: LCM of 620, 978, 646, 102 is 97927140.
2. How to calculate the LCM of 620, 978, 646, 102?
The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 620, 978, 646, 102.
3. What is the LCM formula?
The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.