LCM of 391, 126, 874, 840, 180
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 391, 126, 874, 840, 180 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 391, 126, 874, 840, 180. So, keep reading to learn more.
Given numbers are 391,126,874,840,180
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 391,126,874,840,180 is 18721080.
Find LCM of 391,126,874,840,180 with Prime Factorization
| 2 | 391, 126, 874, 840, 180 |
| 2 | 391, 63, 437, 420, 90 |
| 3 | 391, 63, 437, 210, 45 |
| 3 | 391, 21, 437, 70, 15 |
| 5 | 391, 7, 437, 70, 5 |
| 7 | 391, 7, 437, 14, 1 |
| 23 | 391, 1, 437, 2, 1 |
| 17, 1, 19, 2, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 5 x 7 x 23 x 17 x 1 x 19 x 2 x 1 = 18721080
Therefore, the lowest common multiple of 391,126,874,840,180 is 18721080.
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.
391 x 126 x 874 x 840 x 180 = 6510442780800
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.
391 : 1, 17, 23, 391
126 : 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126
874 : 1, 2, 19, 23, 38, 46, 437, 874
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
180 : 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 391,126,874,840,180, is 1.
Now, the common factors can be found like this.
391:17x 23
126:2x 3x 3x 7
874:2x 19x 23
840:2x 2x 2x 3x 5x 7
180:2x 2x 3x 3x 5
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 3x 3x 3x 5x 7x 23 = 347760
Therefore, the value for common factors is 347760.
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 = 6510442780800/(1x347760)
LCM = 6510442780800/347760
LCM = 18721080
Thus, we can understand that the LCM of 391,126,874,840,180 is 18721080.
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FAQs on LCM of 391, 126, 874, 840, 180
1. What is the LCM of 391, 126, 874, 840, 180?
Answer: LCM of 391, 126, 874, 840, 180 is 18721080.
2. How to calculate the LCM of 391, 126, 874, 840, 180?
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 391, 126, 874, 840, 180.
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}.