LCM of 401, 802, 420, 769
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 401, 802, 420, 769 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 401, 802, 420, 769. So, keep reading to learn more.
Given numbers are 401,802,420,769
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 401,802,420,769 is 129514980.
Find LCM of 401,802,420,769 with Prime Factorization
| 2 | 401, 802, 420, 769 |
| 401 | 401, 401, 210, 769 |
| 1, 1, 210, 769 |
Multiply the prime numbers at the bottom and the left side.
2 x 401 x 1 x 1 x 210 x 769 = 129514980
Therefore, the lowest common multiple of 401,802,420,769 is 129514980.
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.
401 x 802 x 420 x 769 = 103871013960
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.
401 : 1, 401
802 : 1, 2, 401, 802
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
769 : 1, 769
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 401,802,420,769, is 1.
Now, the common factors can be found like this.
401:401
802:2x 401
420:2x 2x 3x 5x 7
769:769
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 401 = 802
Therefore, the value for common factors is 802.
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 = 103871013960/(1x802)
LCM = 103871013960/802
LCM = 129514980
Thus, we can understand that the LCM of 401,802,420,769 is 129514980.
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FAQs on LCM of 401, 802, 420, 769
1. What is the LCM of 401, 802, 420, 769?
Answer: LCM of 401, 802, 420, 769 is 129514980.
2. How to calculate the LCM of 401, 802, 420, 769?
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 401, 802, 420, 769.
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}.