LCM of 978, 972, 189, 644
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 978, 972, 189, 644 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, 972, 189, 644. So, keep reading to learn more.
Given numbers are 978,972,189,644
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 978,972,189,644 is 25508196.
Find LCM of 978,972,189,644 with Prime Factorization
| 2 | 978, 972, 189, 644 |
| 2 | 489, 486, 189, 322 |
| 3 | 489, 243, 189, 161 |
| 3 | 163, 81, 63, 161 |
| 3 | 163, 27, 21, 161 |
| 7 | 163, 9, 7, 161 |
| 163, 9, 1, 23 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 3 x 7 x 163 x 9 x 1 x 23 = 25508196
Therefore, the lowest common multiple of 978,972,189,644 is 25508196.
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 972 x 189 x 644 = 115705177056
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
972 : 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972
189 : 1, 3, 7, 9, 21, 27, 63, 189
644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 978,972,189,644, is 1.
Now, the common factors can be found like this.
978:2x 3x 163
972:2x 2x 3x 3x 3x 3x 3
189:3x 3x 3x 7
644:2x 2x 7x 23
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 3x 3x 3x 3x 7 = 4536
Therefore, the value for common factors is 4536.
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 = 115705177056/(1x4536)
LCM = 115705177056/4536
LCM = 25508196
Thus, we can understand that the LCM of 978,972,189,644 is 25508196.
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FAQs on LCM of 978, 972, 189, 644
1. What is the LCM of 978, 972, 189, 644?
Answer: LCM of 978, 972, 189, 644 is 25508196.
2. How to calculate the LCM of 978, 972, 189, 644?
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, 972, 189, 644.
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}.