LCM of 891, 655, 788, 978, 870
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 891, 655, 788, 978, 870 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 891, 655, 788, 978, 870. So, keep reading to learn more.
Given numbers are 891,655,788,978,870
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 891,655,788,978,870 is 2173856257980.
Find LCM of 891,655,788,978,870 with Prime Factorization
| 2 | 891, 655, 788, 978, 870 |
| 3 | 891, 655, 394, 489, 435 |
| 5 | 297, 655, 394, 163, 145 |
| 297, 131, 394, 163, 29 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 297 x 131 x 394 x 163 x 29 = 2173856257980
Therefore, the lowest common multiple of 891,655,788,978,870 is 2173856257980.
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.
891 x 655 x 788 x 978 x 870 = 391294126436400
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.
891 : 1, 3, 9, 11, 27, 33, 81, 99, 297, 891
655 : 1, 5, 131, 655
788 : 1, 2, 4, 197, 394, 788
978 : 1, 2, 3, 6, 163, 326, 489, 978
870 : 1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 435, 870
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 891,655,788,978,870, is 1.
Now, the common factors can be found like this.
891:3x 3x 3x 3x 11
655:5x 131
788:2x 2x 197
978:2x 3x 163
870:2x 3x 5x 29
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 5 = 180
Therefore, the value for common factors is 180.
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 = 391294126436400/(1x180)
LCM = 391294126436400/180
LCM = 2173856257980
Thus, we can understand that the LCM of 891,655,788,978,870 is 2173856257980.
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FAQs on LCM of 891, 655, 788, 978, 870
1. What is the LCM of 891, 655, 788, 978, 870?
Answer: LCM of 891, 655, 788, 978, 870 is 2173856257980.
2. How to calculate the LCM of 891, 655, 788, 978, 870?
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 891, 655, 788, 978, 870.
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}.