LCM of 84, 78, 72, 90, 152
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 84, 78, 72, 90, 152 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 84, 78, 72, 90, 152. So, keep reading to learn more.
Given numbers are 84,78,72,90,152
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 84,78,72,90,152 is 622440.
Find LCM of 84,78,72,90,152 with Prime Factorization
| 2 | 84, 78, 72, 90, 152 |
| 2 | 42, 39, 36, 45, 76 |
| 2 | 21, 39, 18, 45, 38 |
| 3 | 21, 39, 9, 45, 19 |
| 3 | 7, 13, 3, 15, 19 |
| 7, 13, 1, 5, 19 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 3 x 7 x 13 x 1 x 5 x 19 = 622440
Therefore, the lowest common multiple of 84,78,72,90,152 is 622440.
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.
84 x 78 x 72 x 90 x 152 = 6453457920
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.
84 : 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
78 : 1, 2, 3, 6, 13, 26, 39, 78
72 : 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
90 : 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
152 : 1, 2, 4, 8, 19, 38, 76, 152
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 84,78,72,90,152, is 2.
Now, the common factors can be found like this.
84:2x 2x 3x 7
78:2x 3x 13
72:2x 2x 2x 3x 3
90:2x 3x 3x 5
152:2x 2x 2x 19
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 2x 2x 2x 3x 3x 3x 3 = 5184
Therefore, the value for common factors is 5184.
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 = 6453457920/(2x5184)
LCM = 6453457920/10368
LCM = 622440
Thus, we can understand that the LCM of 84,78,72,90,152 is 622440.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 84, 78, 72, 90, 152
1. What is the LCM of 84, 78, 72, 90, 152?
Answer: LCM of 84, 78, 72, 90, 152 is 622440.
2. How to calculate the LCM of 84, 78, 72, 90, 152?
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 84, 78, 72, 90, 152.
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}.