LCM of 782, 721, 440, 972, 649
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 782, 721, 440, 972, 649 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 782, 721, 440, 972, 649. So, keep reading to learn more.
Given numbers are 782,721,440,972,649
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 782,721,440,972,649 is 1778373523080.
Find LCM of 782,721,440,972,649 with Prime Factorization
| 2 | 782, 721, 440, 972, 649 |
| 2 | 391, 721, 220, 486, 649 |
| 11 | 391, 721, 110, 243, 649 |
| 391, 721, 10, 243, 59 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 11 x 391 x 721 x 10 x 243 x 59 = 1778373523080
Therefore, the lowest common multiple of 782,721,440,972,649 is 1778373523080.
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.
782 x 721 x 440 x 972 x 649 = 156496870031040
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.
782 : 1, 2, 17, 23, 34, 46, 391, 782
721 : 1, 7, 103, 721
440 : 1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440
972 : 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972
649 : 1, 11, 59, 649
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 782,721,440,972,649, is 1.
Now, the common factors can be found like this.
782:2x 17x 23
721:7x 103
440:2x 2x 2x 5x 11
972:2x 2x 3x 3x 3x 3x 3
649:11x 59
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 11 = 88
Therefore, the value for common factors is 88.
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 = 156496870031040/(1x88)
LCM = 156496870031040/88
LCM = 1778373523080
Thus, we can understand that the LCM of 782,721,440,972,649 is 1778373523080.
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FAQs on LCM of 782, 721, 440, 972, 649
1. What is the LCM of 782, 721, 440, 972, 649?
Answer: LCM of 782, 721, 440, 972, 649 is 1778373523080.
2. How to calculate the LCM of 782, 721, 440, 972, 649?
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 782, 721, 440, 972, 649.
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}.