LCM of 257, 122, 209, 646
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 257, 122, 209, 646 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 257, 122, 209, 646. So, keep reading to learn more.
Given numbers are 257,122,209,646
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 257,122,209,646 is 111400762.
Find LCM of 257,122,209,646 with Prime Factorization
| 2 | 257, 122, 209, 646 |
| 19 | 257, 61, 209, 323 |
| 257, 61, 11, 17 |
Multiply the prime numbers at the bottom and the left side.
2 x 19 x 257 x 61 x 11 x 17 = 111400762
Therefore, the lowest common multiple of 257,122,209,646 is 111400762.
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.
257 x 122 x 209 x 646 = 4233228956
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.
257 : 1, 257
122 : 1, 2, 61, 122
209 : 1, 11, 19, 209
646 : 1, 2, 17, 19, 34, 38, 323, 646
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 257,122,209,646, is 1.
Now, the common factors can be found like this.
257:257
122:2x 61
209:11x 19
646:2x 17x 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 19 = 38
Therefore, the value for common factors is 38.
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 = 4233228956/(1x38)
LCM = 4233228956/38
LCM = 111400762
Thus, we can understand that the LCM of 257,122,209,646 is 111400762.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 257, 122, 209, 646
1. What is the LCM of 257, 122, 209, 646?
Answer: LCM of 257, 122, 209, 646 is 111400762.
2. How to calculate the LCM of 257, 122, 209, 646?
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 257, 122, 209, 646.
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}.