LCM of 841, 336, 791, 420
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 841, 336, 791, 420 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 841, 336, 791, 420. So, keep reading to learn more.
Given numbers are 841,336,791,420
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 841,336,791,420 is 159655440.
Find LCM of 841,336,791,420 with Prime Factorization
| 2 | 841, 336, 791, 420 |
| 2 | 841, 168, 791, 210 |
| 3 | 841, 84, 791, 105 |
| 7 | 841, 28, 791, 35 |
| 841, 4, 113, 5 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 7 x 841 x 4 x 113 x 5 = 159655440
Therefore, the lowest common multiple of 841,336,791,420 is 159655440.
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.
841 x 336 x 791 x 420 = 93877398720
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.
841 : 1, 29, 841
336 : 1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 168, 336
791 : 1, 7, 113, 791
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 841,336,791,420, is 1.
Now, the common factors can be found like this.
841:29x 29
336:2x 2x 2x 2x 3x 7
791:7x 113
420:2x 2x 3x 5x 7
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 7x 7 = 588
Therefore, the value for common factors is 588.
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 = 93877398720/(1x588)
LCM = 93877398720/588
LCM = 159655440
Thus, we can understand that the LCM of 841,336,791,420 is 159655440.
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FAQs on LCM of 841, 336, 791, 420
1. What is the LCM of 841, 336, 791, 420?
Answer: LCM of 841, 336, 791, 420 is 159655440.
2. How to calculate the LCM of 841, 336, 791, 420?
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 841, 336, 791, 420.
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}.