LCM of 646, 989, 897, 281
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 646, 989, 897, 281 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 646, 989, 897, 281. So, keep reading to learn more.
Given numbers are 646,989,897,281
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 646,989,897,281 is 7001639346.
Find LCM of 646,989,897,281 with Prime Factorization
| 23 | 646, 989, 897, 281 |
| 646, 43, 39, 281 |
Multiply the prime numbers at the bottom and the left side.
23 x 646 x 43 x 39 x 281 = 7001639346
Therefore, the lowest common multiple of 646,989,897,281 is 7001639346.
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.
646 x 989 x 897 x 281 = 161037704958
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.
646 : 1, 2, 17, 19, 34, 38, 323, 646
989 : 1, 23, 43, 989
897 : 1, 3, 13, 23, 39, 69, 299, 897
281 : 1, 281
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 646,989,897,281, is 1.
Now, the common factors can be found like this.
646:2x 17x 19
989:23x 43
897:3x 13x 23
281:281
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
23 = 23
Therefore, the value for common factors is 23.
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 = 161037704958/(1x23)
LCM = 161037704958/23
LCM = 7001639346
Thus, we can understand that the LCM of 646,989,897,281 is 7001639346.
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FAQs on LCM of 646, 989, 897, 281
1. What is the LCM of 646, 989, 897, 281?
Answer: LCM of 646, 989, 897, 281 is 7001639346.
2. How to calculate the LCM of 646, 989, 897, 281?
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 646, 989, 897, 281.
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}.