LCM of 490, 124, 221, 221
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 490, 124, 221, 221 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 490, 124, 221, 221. So, keep reading to learn more.
Given numbers are 490,124,221,221
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 490,124,221,221 is 6713980.
Find LCM of 490,124,221,221 with Prime Factorization
| 2 | 490, 124, 221, 221 |
| 13 | 245, 62, 221, 221 |
| 17 | 245, 62, 17, 17 |
| 245, 62, 1, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 13 x 17 x 245 x 62 x 1 x 1 = 6713980
Therefore, the lowest common multiple of 490,124,221,221 is 6713980.
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.
490 x 124 x 221 x 221 = 2967579160
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.
490 : 1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490
124 : 1, 2, 4, 31, 62, 124
221 : 1, 13, 17, 221
221 : 1, 13, 17, 221
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 490,124,221,221, is 1.
Now, the common factors can be found like this.
490:2x 5x 7x 7
124:2x 2x 31
221:13x 17
221:13x 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 13x 17 = 442
Therefore, the value for common factors is 442.
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 = 2967579160/(1x442)
LCM = 2967579160/442
LCM = 6713980
Thus, we can understand that the LCM of 490,124,221,221 is 6713980.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 490, 124, 221, 221
1. What is the LCM of 490, 124, 221, 221?
Answer: LCM of 490, 124, 221, 221 is 6713980.
2. How to calculate the LCM of 490, 124, 221, 221?
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 490, 124, 221, 221.
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}.