LCM of 840, 272, 971, 620
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 840, 272, 971, 620 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 840, 272, 971, 620. So, keep reading to learn more.
Given numbers are 840,272,971,620
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 840,272,971,620 is 859684560.
Find LCM of 840,272,971,620 with Prime Factorization
| 2 | 840, 272, 971, 620 |
| 2 | 420, 136, 971, 310 |
| 2 | 210, 68, 971, 155 |
| 5 | 105, 34, 971, 155 |
| 21, 34, 971, 31 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 5 x 21 x 34 x 971 x 31 = 859684560
Therefore, the lowest common multiple of 840,272,971,620 is 859684560.
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.
840 x 272 x 971 x 620 = 137549529600
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.
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
272 : 1, 2, 4, 8, 16, 17, 34, 68, 136, 272
971 : 1, 971
620 : 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 840,272,971,620, is 1.
Now, the common factors can be found like this.
840:2x 2x 2x 3x 5x 7
272:2x 2x 2x 2x 17
971:971
620:2x 2x 5x 31
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 5 = 160
Therefore, the value for common factors is 160.
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 = 137549529600/(1x160)
LCM = 137549529600/160
LCM = 859684560
Thus, we can understand that the LCM of 840,272,971,620 is 859684560.
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FAQs on LCM of 840, 272, 971, 620
1. What is the LCM of 840, 272, 971, 620?
Answer: LCM of 840, 272, 971, 620 is 859684560.
2. How to calculate the LCM of 840, 272, 971, 620?
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 840, 272, 971, 620.
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}.