LCM of 157, 972, 819, 221
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 157, 972, 819, 221 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 157, 972, 819, 221. So, keep reading to learn more.
Given numbers are 157,972,819,221
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 157,972,819,221 is 236078388.
Find LCM of 157,972,819,221 with Prime Factorization
| 3 | 157, 972, 819, 221 |
| 3 | 157, 324, 273, 221 |
| 13 | 157, 108, 91, 221 |
| 157, 108, 7, 17 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 13 x 157 x 108 x 7 x 17 = 236078388
Therefore, the lowest common multiple of 157,972,819,221 is 236078388.
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.
157 x 972 x 819 x 221 = 27621171396
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.
157 : 1, 157
972 : 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972
819 : 1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819
221 : 1, 13, 17, 221
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 157,972,819,221, is 1.
Now, the common factors can be found like this.
157:157
972:2x 2x 3x 3x 3x 3x 3
819:3x 3x 7x 13
221:13x 17
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 13 = 117
Therefore, the value for common factors is 117.
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 = 27621171396/(1x117)
LCM = 27621171396/117
LCM = 236078388
Thus, we can understand that the LCM of 157,972,819,221 is 236078388.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 157, 972, 819, 221
1. What is the LCM of 157, 972, 819, 221?
Answer: LCM of 157, 972, 819, 221 is 236078388.
2. How to calculate the LCM of 157, 972, 819, 221?
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 157, 972, 819, 221.
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}.