LCM of 678, 865, 821, 820, 748
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 678, 865, 821, 820, 748 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 678, 865, 821, 820, 748. So, keep reading to learn more.
Given numbers are 678,865,821,820,748
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 678,865,821,820,748 is 7383196334580.
Find LCM of 678,865,821,820,748 with Prime Factorization
| 2 | 678, 865, 821, 820, 748 |
| 2 | 339, 865, 821, 410, 374 |
| 5 | 339, 865, 821, 205, 187 |
| 339, 173, 821, 41, 187 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 339 x 173 x 821 x 41 x 187 = 7383196334580
Therefore, the lowest common multiple of 678,865,821,820,748 is 7383196334580.
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.
678 x 865 x 821 x 820 x 748 = 295327853383200
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.
678 : 1, 2, 3, 6, 113, 226, 339, 678
865 : 1, 5, 173, 865
821 : 1, 821
820 : 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820
748 : 1, 2, 4, 11, 17, 22, 34, 44, 68, 187, 374, 748
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 678,865,821,820,748, is 1.
Now, the common factors can be found like this.
678:2x 3x 113
865:5x 173
821:821
820:2x 2x 5x 41
748:2x 2x 11x 17
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 2x 5 = 40
Therefore, the value for common factors is 40.
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 = 295327853383200/(1x40)
LCM = 295327853383200/40
LCM = 7383196334580
Thus, we can understand that the LCM of 678,865,821,820,748 is 7383196334580.
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FAQs on LCM of 678, 865, 821, 820, 748
1. What is the LCM of 678, 865, 821, 820, 748?
Answer: LCM of 678, 865, 821, 820, 748 is 7383196334580.
2. How to calculate the LCM of 678, 865, 821, 820, 748?
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 678, 865, 821, 820, 748.
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}.