LCM of 608, 646, 381, 420
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 608, 646, 381, 420 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 608, 646, 381, 420. So, keep reading to learn more.
Given numbers are 608,646,381,420
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 608,646,381,420 is 137830560.
Find LCM of 608,646,381,420 with Prime Factorization
| 2 | 608, 646, 381, 420 |
| 2 | 304, 323, 381, 210 |
| 3 | 152, 323, 381, 105 |
| 19 | 152, 323, 127, 35 |
| 8, 17, 127, 35 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 19 x 8 x 17 x 127 x 35 = 137830560
Therefore, the lowest common multiple of 608,646,381,420 is 137830560.
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.
608 x 646 x 381 x 420 = 62850735360
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.
608 : 1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 304, 608
646 : 1, 2, 17, 19, 34, 38, 323, 646
381 : 1, 3, 127, 381
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 608,646,381,420, is 1.
Now, the common factors can be found like this.
608:2x 2x 2x 2x 2x 19
646:2x 17x 19
381:3x 127
420:2x 2x 3x 5x 7
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 2x 3x 19 = 456
Therefore, the value for common factors is 456.
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 = 62850735360/(1x456)
LCM = 62850735360/456
LCM = 137830560
Thus, we can understand that the LCM of 608,646,381,420 is 137830560.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 608, 646, 381, 420
1. What is the LCM of 608, 646, 381, 420?
Answer: LCM of 608, 646, 381, 420 is 137830560.
2. How to calculate the LCM of 608, 646, 381, 420?
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 608, 646, 381, 420.
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}.