LCM of 520, 618, 646, 985, 665
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 520, 618, 646, 985, 665 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 520, 618, 646, 985, 665. So, keep reading to learn more.
Given numbers are 520,618,646,985,665
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 520,618,646,985,665 is 71569603560.
Find LCM of 520,618,646,985,665 with Prime Factorization
| 2 | 520, 618, 646, 985, 665 |
| 5 | 260, 309, 323, 985, 665 |
| 19 | 52, 309, 323, 197, 133 |
| 52, 309, 17, 197, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 19 x 52 x 309 x 17 x 197 x 7 = 71569603560
Therefore, the lowest common multiple of 520,618,646,985,665 is 71569603560.
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.
520 x 618 x 646 x 985 x 665 = 135982246764000
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.
520 : 1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520
618 : 1, 2, 3, 6, 103, 206, 309, 618
646 : 1, 2, 17, 19, 34, 38, 323, 646
985 : 1, 5, 197, 985
665 : 1, 5, 7, 19, 35, 95, 133, 665
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 520,618,646,985,665, is 1.
Now, the common factors can be found like this.
520:2x 2x 2x 5x 13
618:2x 3x 103
646:2x 17x 19
985:5x 197
665:5x 7x 19
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 5x 5x 19 = 1900
Therefore, the value for common factors is 1900.
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 = 135982246764000/(1x1900)
LCM = 135982246764000/1900
LCM = 71569603560
Thus, we can understand that the LCM of 520,618,646,985,665 is 71569603560.
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FAQs on LCM of 520, 618, 646, 985, 665
1. What is the LCM of 520, 618, 646, 985, 665?
Answer: LCM of 520, 618, 646, 985, 665 is 71569603560.
2. How to calculate the LCM of 520, 618, 646, 985, 665?
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 520, 618, 646, 985, 665.
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}.