LCM of 945, 721, 680, 704
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 945, 721, 680, 704 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 945, 721, 680, 704. So, keep reading to learn more.
Given numbers are 945,721,680,704
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 945,721,680,704 is 1164905280.
Find LCM of 945,721,680,704 with Prime Factorization
| 2 | 945, 721, 680, 704 |
| 2 | 945, 721, 340, 352 |
| 2 | 945, 721, 170, 176 |
| 5 | 945, 721, 85, 88 |
| 7 | 189, 721, 17, 88 |
| 27, 103, 17, 88 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 5 x 7 x 27 x 103 x 17 x 88 = 1164905280
Therefore, the lowest common multiple of 945,721,680,704 is 1164905280.
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.
945 x 721 x 680 x 704 = 326173478400
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.
945 : 1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945
721 : 1, 7, 103, 721
680 : 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
704 : 1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 176, 352, 704
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 945,721,680,704, is 1.
Now, the common factors can be found like this.
945:3x 3x 3x 5x 7
721:7x 103
680:2x 2x 2x 5x 17
704:2x 2x 2x 2x 2x 2x 11
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 5x 7 = 280
Therefore, the value for common factors is 280.
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 = 326173478400/(1x280)
LCM = 326173478400/280
LCM = 1164905280
Thus, we can understand that the LCM of 945,721,680,704 is 1164905280.
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FAQs on LCM of 945, 721, 680, 704
1. What is the LCM of 945, 721, 680, 704?
Answer: LCM of 945, 721, 680, 704 is 1164905280.
2. How to calculate the LCM of 945, 721, 680, 704?
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 945, 721, 680, 704.
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}.