LCM of 380, 342, 861, 988
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 380, 342, 861, 988 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 380, 342, 861, 988. So, keep reading to learn more.
Given numbers are 380,342,861,988
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 380,342,861,988 is 12760020.
Find LCM of 380,342,861,988 with Prime Factorization
| 2 | 380, 342, 861, 988 |
| 2 | 190, 171, 861, 494 |
| 3 | 95, 171, 861, 247 |
| 19 | 95, 57, 287, 247 |
| 5, 3, 287, 13 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 19 x 5 x 3 x 287 x 13 = 12760020
Therefore, the lowest common multiple of 380,342,861,988 is 12760020.
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.
380 x 342 x 861 x 988 = 110552813280
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.
380 : 1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380
342 : 1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342
861 : 1, 3, 7, 21, 41, 123, 287, 861
988 : 1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 380,342,861,988, is 1.
Now, the common factors can be found like this.
380:2x 2x 5x 19
342:2x 3x 3x 19
861:3x 7x 41
988:2x 2x 13x 19
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 19x 19 = 8664
Therefore, the value for common factors is 8664.
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 = 110552813280/(1x8664)
LCM = 110552813280/8664
LCM = 12760020
Thus, we can understand that the LCM of 380,342,861,988 is 12760020.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 380, 342, 861, 988
1. What is the LCM of 380, 342, 861, 988?
Answer: LCM of 380, 342, 861, 988 is 12760020.
2. How to calculate the LCM of 380, 342, 861, 988?
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 380, 342, 861, 988.
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}.