LCM of 680, 688, 618, 980
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 680, 688, 618, 980 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 680, 688, 618, 980. So, keep reading to learn more.
Given numbers are 680,688,618,980
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 680,688,618,980 is 885445680.
Find LCM of 680,688,618,980 with Prime Factorization
| 2 | 680, 688, 618, 980 |
| 2 | 340, 344, 309, 490 |
| 2 | 170, 172, 309, 245 |
| 5 | 85, 86, 309, 245 |
| 17, 86, 309, 49 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 5 x 17 x 86 x 309 x 49 = 885445680
Therefore, the lowest common multiple of 680,688,618,980 is 885445680.
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.
680 x 688 x 618 x 980 = 283342617600
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.
680 : 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
688 : 1, 2, 4, 8, 16, 43, 86, 172, 344, 688
618 : 1, 2, 3, 6, 103, 206, 309, 618
980 : 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 680,688,618,980, is 2.
Now, the common factors can be found like this.
680:2x 2x 2x 5x 17
688:2x 2x 2x 2x 43
618:2x 3x 103
980:2x 2x 5x 7x 7
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 2x 5 = 160
Therefore, the value for common factors is 160.
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 = 283342617600/(2x160)
LCM = 283342617600/320
LCM = 885445680
Thus, we can understand that the LCM of 680,688,618,980 is 885445680.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 680, 688, 618, 980
1. What is the LCM of 680, 688, 618, 980?
Answer: LCM of 680, 688, 618, 980 is 885445680.
2. How to calculate the LCM of 680, 688, 618, 980?
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 680, 688, 618, 980.
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}.