LCM of 721, 812, 561, 700
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 721, 812, 561, 700 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 721, 812, 561, 700. So, keep reading to learn more.
Given numbers are 721,812,561,700
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 721,812,561,700 is 1172994900.
Find LCM of 721,812,561,700 with Prime Factorization
| 2 | 721, 812, 561, 700 |
| 2 | 721, 406, 561, 350 |
| 7 | 721, 203, 561, 175 |
| 103, 29, 561, 25 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 7 x 103 x 29 x 561 x 25 = 1172994900
Therefore, the lowest common multiple of 721,812,561,700 is 1172994900.
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.
721 x 812 x 561 x 700 = 229907000400
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.
721 : 1, 7, 103, 721
812 : 1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812
561 : 1, 3, 11, 17, 33, 51, 187, 561
700 : 1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 721,812,561,700, is 1.
Now, the common factors can be found like this.
721:7x 103
812:2x 2x 7x 29
561:3x 11x 17
700:2x 2x 5x 5x 7
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 7x 7 = 196
Therefore, the value for common factors is 196.
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 = 229907000400/(1x196)
LCM = 229907000400/196
LCM = 1172994900
Thus, we can understand that the LCM of 721,812,561,700 is 1172994900.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 721, 812, 561, 700
1. What is the LCM of 721, 812, 561, 700?
Answer: LCM of 721, 812, 561, 700 is 1172994900.
2. How to calculate the LCM of 721, 812, 561, 700?
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 721, 812, 561, 700.
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}.