LCM of 605, 728, 702, 221
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 605, 728, 702, 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 605, 728, 702, 221. So, keep reading to learn more.
Given numbers are 605,728,702,221
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 605,728,702,221 is 202161960.
Find LCM of 605,728,702,221 with Prime Factorization
| 2 | 605, 728, 702, 221 |
| 13 | 605, 364, 351, 221 |
| 605, 28, 27, 17 |
Multiply the prime numbers at the bottom and the left side.
2 x 13 x 605 x 28 x 27 x 17 = 202161960
Therefore, the lowest common multiple of 605,728,702,221 is 202161960.
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.
605 x 728 x 702 x 221 = 68330742480
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.
605 : 1, 5, 11, 55, 121, 605
728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
702 : 1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 117, 234, 351, 702
221 : 1, 13, 17, 221
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 605,728,702,221, is 1.
Now, the common factors can be found like this.
605:5x 11x 11
728:2x 2x 2x 7x 13
702:2x 3x 3x 3x 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 13x 13 = 338
Therefore, the value for common factors is 338.
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 = 68330742480/(1x338)
LCM = 68330742480/338
LCM = 202161960
Thus, we can understand that the LCM of 605,728,702,221 is 202161960.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 605, 728, 702, 221
1. What is the LCM of 605, 728, 702, 221?
Answer: LCM of 605, 728, 702, 221 is 202161960.
2. How to calculate the LCM of 605, 728, 702, 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 605, 728, 702, 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}.