LCM of 978, 305, 639, 639
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 978, 305, 639, 639 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 978, 305, 639, 639. So, keep reading to learn more.
Given numbers are 978,305,639,639
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 978,305,639,639 is 63535770.
Find LCM of 978,305,639,639 with Prime Factorization
| 3 | 978, 305, 639, 639 |
| 3 | 326, 305, 213, 213 |
| 71 | 326, 305, 71, 71 |
| 326, 305, 1, 1 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 71 x 326 x 305 x 1 x 1 = 63535770
Therefore, the lowest common multiple of 978,305,639,639 is 63535770.
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.
978 x 305 x 639 x 639 = 121798071090
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.
978 : 1, 2, 3, 6, 163, 326, 489, 978
305 : 1, 5, 61, 305
639 : 1, 3, 9, 71, 213, 639
639 : 1, 3, 9, 71, 213, 639
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 978,305,639,639, is 1.
Now, the common factors can be found like this.
978:2x 3x 163
305:5x 61
639:3x 3x 71
639:3x 3x 71
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 3x 71 = 1917
Therefore, the value for common factors is 1917.
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 = 121798071090/(1x1917)
LCM = 121798071090/1917
LCM = 63535770
Thus, we can understand that the LCM of 978,305,639,639 is 63535770.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 978, 305, 639, 639
1. What is the LCM of 978, 305, 639, 639?
Answer: LCM of 978, 305, 639, 639 is 63535770.
2. How to calculate the LCM of 978, 305, 639, 639?
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 978, 305, 639, 639.
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}.