LCM of 402, 988, 420, 793
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 402, 988, 420, 793 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 402, 988, 420, 793. So, keep reading to learn more.
Given numbers are 402,988,420,793
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 402,988,420,793 is 423985380.
Find LCM of 402,988,420,793 with Prime Factorization
| 2 | 402, 988, 420, 793 |
| 2 | 201, 494, 210, 793 |
| 3 | 201, 247, 105, 793 |
| 13 | 67, 247, 35, 793 |
| 67, 19, 35, 61 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 13 x 67 x 19 x 35 x 61 = 423985380
Therefore, the lowest common multiple of 402,988,420,793 is 423985380.
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.
402 x 988 x 420 x 793 = 132283438560
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.
402 : 1, 2, 3, 6, 67, 134, 201, 402
988 : 1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988
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
793 : 1, 13, 61, 793
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 402,988,420,793, is 1.
Now, the common factors can be found like this.
402:2x 3x 67
988:2x 2x 13x 19
420:2x 2x 3x 5x 7
793:13x 61
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 13 = 312
Therefore, the value for common factors is 312.
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 = 132283438560/(1x312)
LCM = 132283438560/312
LCM = 423985380
Thus, we can understand that the LCM of 402,988,420,793 is 423985380.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 402, 988, 420, 793
1. What is the LCM of 402, 988, 420, 793?
Answer: LCM of 402, 988, 420, 793 is 423985380.
2. How to calculate the LCM of 402, 988, 420, 793?
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 402, 988, 420, 793.
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}.