Find the LCM of 720, 840, 642, 319, 406 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 720, 840, 642, 319, 406. So, keep reading to learn more.
Given numbers are 720,840,642,319,406
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 720,840,642,319,406 is 172030320.
Find LCM of 720,840,642,319,406 with Prime Factorization
2 | 720, 840, 642, 319, 406 |
2 | 360, 420, 321, 319, 203 |
2 | 180, 210, 321, 319, 203 |
3 | 90, 105, 321, 319, 203 |
5 | 30, 35, 107, 319, 203 |
7 | 6, 7, 107, 319, 203 |
29 | 6, 1, 107, 319, 29 |
6, 1, 107, 11, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 5 x 7 x 29 x 6 x 1 x 107 x 11 x 1 = 172030320
Therefore, the lowest common multiple of 720,840,642,319,406 is 172030320.
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.
720 x 840 x 642 x 319 x 406 = 50287903142400
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.
720 : 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
642 : 1, 2, 3, 6, 107, 214, 321, 642
319 : 1, 11, 29, 319
406 : 1, 2, 7, 14, 29, 58, 203, 406
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 720,840,642,319,406, is 1.
Now, the common factors can be found like this.
720:2x 2x 2x 2x 3x 3x 5
840:2x 2x 2x 3x 5x 7
642:2x 3x 107
319:11x 29
406:2x 7x 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 2x 2x 2x 2x 3x 3x 5x 7x 29 = 292320
Therefore, the value for common factors is 292320.
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 = 50287903142400/(1x292320)
LCM = 50287903142400/292320
LCM = 172030320
Thus, we can understand that the LCM of 720,840,642,319,406 is 172030320.
Here are some samples of LCM of two or more Numbers calculations.
1. What is the LCM of 720, 840, 642, 319, 406?
Answer: LCM of 720, 840, 642, 319, 406 is 172030320.
2. How to calculate the LCM of 720, 840, 642, 319, 406?
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 720, 840, 642, 319, 406.
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}.