LCM of 821, 978, 771, 287
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 821, 978, 771, 287 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 821, 978, 771, 287. So, keep reading to learn more.
Given numbers are 821,978,771,287
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 821,978,771,287 is 59223903942.
Find LCM of 821,978,771,287 with Prime Factorization
| 3 | 821, 978, 771, 287 |
| 821, 326, 257, 287 |
Multiply the prime numbers at the bottom and the left side.
3 x 821 x 326 x 257 x 287 = 59223903942
Therefore, the lowest common multiple of 821,978,771,287 is 59223903942.
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.
821 x 978 x 771 x 287 = 177671711826
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.
821 : 1, 821
978 : 1, 2, 3, 6, 163, 326, 489, 978
771 : 1, 3, 257, 771
287 : 1, 7, 41, 287
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 821,978,771,287, is 1.
Now, the common factors can be found like this.
821:821
978:2x 3x 163
771:3x 257
287:7x 41
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3 = 3
Therefore, the value for common factors is 3.
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 = 177671711826/(1x3)
LCM = 177671711826/3
LCM = 59223903942
Thus, we can understand that the LCM of 821,978,771,287 is 59223903942.
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FAQs on LCM of 821, 978, 771, 287
1. What is the LCM of 821, 978, 771, 287?
Answer: LCM of 821, 978, 771, 287 is 59223903942.
2. How to calculate the LCM of 821, 978, 771, 287?
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 821, 978, 771, 287.
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}.