LCM of 784, 988, 260, 221
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 784, 988, 260, 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 784, 988, 260, 221. So, keep reading to learn more.
Given numbers are 784,988,260,221
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 784,988,260,221 is 16460080.
Find LCM of 784,988,260,221 with Prime Factorization
| 2 | 784, 988, 260, 221 |
| 2 | 392, 494, 130, 221 |
| 13 | 196, 247, 65, 221 |
| 196, 19, 5, 17 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 13 x 196 x 19 x 5 x 17 = 16460080
Therefore, the lowest common multiple of 784,988,260,221 is 16460080.
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.
784 x 988 x 260 x 221 = 44508056320
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.
784 : 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784
988 : 1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988
260 : 1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260
221 : 1, 13, 17, 221
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 784,988,260,221, is 1.
Now, the common factors can be found like this.
784:2x 2x 2x 2x 7x 7
988:2x 2x 13x 19
260:2x 2x 5x 13
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 2x 2x 2x 13x 13 = 2704
Therefore, the value for common factors is 2704.
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 = 44508056320/(1x2704)
LCM = 44508056320/2704
LCM = 16460080
Thus, we can understand that the LCM of 784,988,260,221 is 16460080.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 784, 988, 260, 221
1. What is the LCM of 784, 988, 260, 221?
Answer: LCM of 784, 988, 260, 221 is 16460080.
2. How to calculate the LCM of 784, 988, 260, 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 784, 988, 260, 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}.