LCM of 688, 815, 391, 452
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 688, 815, 391, 452 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 688, 815, 391, 452. So, keep reading to learn more.
Given numbers are 688,815,391,452
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 688,815,391,452 is 24774291760.
Find LCM of 688,815,391,452 with Prime Factorization
| 2 | 688, 815, 391, 452 |
| 2 | 344, 815, 391, 226 |
| 172, 815, 391, 113 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 172 x 815 x 391 x 113 = 24774291760
Therefore, the lowest common multiple of 688,815,391,452 is 24774291760.
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.
688 x 815 x 391 x 452 = 99097167040
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.
688 : 1, 2, 4, 8, 16, 43, 86, 172, 344, 688
815 : 1, 5, 163, 815
391 : 1, 17, 23, 391
452 : 1, 2, 4, 113, 226, 452
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 688,815,391,452, is 1.
Now, the common factors can be found like this.
688:2x 2x 2x 2x 43
815:5x 163
391:17x 23
452:2x 2x 113
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2 = 4
Therefore, the value for common factors is 4.
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 = 99097167040/(1x4)
LCM = 99097167040/4
LCM = 24774291760
Thus, we can understand that the LCM of 688,815,391,452 is 24774291760.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 688, 815, 391, 452
1. What is the LCM of 688, 815, 391, 452?
Answer: LCM of 688, 815, 391, 452 is 24774291760.
2. How to calculate the LCM of 688, 815, 391, 452?
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 688, 815, 391, 452.
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}.