LCM of 649, 697, 660, 661
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 649, 697, 660, 661 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 649, 697, 660, 661. So, keep reading to learn more.
Given numbers are 649,697,660,661
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 649,697,660,661 is 17940319980.
Find LCM of 649,697,660,661 with Prime Factorization
| 11 | 649, 697, 660, 661 |
| 59, 697, 60, 661 |
Multiply the prime numbers at the bottom and the left side.
11 x 59 x 697 x 60 x 661 = 17940319980
Therefore, the lowest common multiple of 649,697,660,661 is 17940319980.
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.
649 x 697 x 660 x 661 = 197343519780
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.
649 : 1, 11, 59, 649
697 : 1, 17, 41, 697
660 : 1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660
661 : 1, 661
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 649,697,660,661, is 1.
Now, the common factors can be found like this.
649:11x 59
697:17x 41
660:2x 2x 3x 5x 11
661:661
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
11 = 11
Therefore, the value for common factors is 11.
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 = 197343519780/(1x11)
LCM = 197343519780/11
LCM = 17940319980
Thus, we can understand that the LCM of 649,697,660,661 is 17940319980.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 649, 697, 660, 661
1. What is the LCM of 649, 697, 660, 661?
Answer: LCM of 649, 697, 660, 661 is 17940319980.
2. How to calculate the LCM of 649, 697, 660, 661?
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 649, 697, 660, 661.
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}.