LCM of 717, 631, 690, 611, 638
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 717, 631, 690, 611, 638 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 717, 631, 690, 611, 638. So, keep reading to learn more.
Given numbers are 717,631,690,611,638
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 717,631,690,611,638 is 20281881652890.
Find LCM of 717,631,690,611,638 with Prime Factorization
| 2 | 717, 631, 690, 611, 638 |
| 3 | 717, 631, 345, 611, 319 |
| 239, 631, 115, 611, 319 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 239 x 631 x 115 x 611 x 319 = 20281881652890
Therefore, the lowest common multiple of 717,631,690,611,638 is 20281881652890.
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.
717 x 631 x 690 x 611 x 638 = 121691289917340
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.
717 : 1, 3, 239, 717
631 : 1, 631
690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
611 : 1, 13, 47, 611
638 : 1, 2, 11, 22, 29, 58, 319, 638
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 717,631,690,611,638, is 1.
Now, the common factors can be found like this.
717:3x 239
631:631
690:2x 3x 5x 23
611:13x 47
638:2x 11x 29
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3 = 6
Therefore, the value for common factors is 6.
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 = 121691289917340/(1x6)
LCM = 121691289917340/6
LCM = 20281881652890
Thus, we can understand that the LCM of 717,631,690,611,638 is 20281881652890.
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FAQs on LCM of 717, 631, 690, 611, 638
1. What is the LCM of 717, 631, 690, 611, 638?
Answer: LCM of 717, 631, 690, 611, 638 is 20281881652890.
2. How to calculate the LCM of 717, 631, 690, 611, 638?
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 717, 631, 690, 611, 638.
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}.