LCM of 420, 458, 308, 636
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 420, 458, 308, 636 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 420, 458, 308, 636. So, keep reading to learn more.
Given numbers are 420,458,308,636
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 420,458,308,636 is 56072940.
Find LCM of 420,458,308,636 with Prime Factorization
| 2 | 420, 458, 308, 636 |
| 2 | 210, 229, 154, 318 |
| 3 | 105, 229, 77, 159 |
| 7 | 35, 229, 77, 53 |
| 5, 229, 11, 53 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 7 x 5 x 229 x 11 x 53 = 56072940
Therefore, the lowest common multiple of 420,458,308,636 is 56072940.
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.
420 x 458 x 308 x 636 = 37681015680
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.
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
458 : 1, 2, 229, 458
308 : 1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308
636 : 1, 2, 3, 4, 6, 12, 53, 106, 159, 212, 318, 636
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 420,458,308,636, is 2.
Now, the common factors can be found like this.
420:2x 2x 3x 5x 7
458:2x 229
308:2x 2x 7x 11
636:2x 2x 3x 53
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 2x 3x 7 = 336
Therefore, the value for common factors is 336.
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 = 37681015680/(2x336)
LCM = 37681015680/672
LCM = 56072940
Thus, we can understand that the LCM of 420,458,308,636 is 56072940.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 420, 458, 308, 636
1. What is the LCM of 420, 458, 308, 636?
Answer: LCM of 420, 458, 308, 636 is 56072940.
2. How to calculate the LCM of 420, 458, 308, 636?
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 420, 458, 308, 636.
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}.