LCM of 669, 639, 840, 868, 407
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 669, 639, 840, 868, 407 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 669, 639, 840, 868, 407. So, keep reading to learn more.
Given numbers are 669,639,840,868,407
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 669,639,840,868,407 is 503407701720.
Find LCM of 669,639,840,868,407 with Prime Factorization
| 2 | 669, 639, 840, 868, 407 |
| 2 | 669, 639, 420, 434, 407 |
| 3 | 669, 639, 210, 217, 407 |
| 7 | 223, 213, 70, 217, 407 |
| 223, 213, 10, 31, 407 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 7 x 223 x 213 x 10 x 31 x 407 = 503407701720
Therefore, the lowest common multiple of 669,639,840,868,407 is 503407701720.
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.
669 x 639 x 840 x 868 x 407 = 126858740833440
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.
669 : 1, 3, 223, 669
639 : 1, 3, 9, 71, 213, 639
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
868 : 1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868
407 : 1, 11, 37, 407
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 669,639,840,868,407, is 1.
Now, the common factors can be found like this.
669:3x 223
639:3x 3x 71
840:2x 2x 2x 3x 5x 7
868:2x 2x 7x 31
407:11x 37
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 3x 3x 7 = 252
Therefore, the value for common factors is 252.
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 = 126858740833440/(1x252)
LCM = 126858740833440/252
LCM = 503407701720
Thus, we can understand that the LCM of 669,639,840,868,407 is 503407701720.
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FAQs on LCM of 669, 639, 840, 868, 407
1. What is the LCM of 669, 639, 840, 868, 407?
Answer: LCM of 669, 639, 840, 868, 407 is 503407701720.
2. How to calculate the LCM of 669, 639, 840, 868, 407?
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 669, 639, 840, 868, 407.
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}.