LCM of 253, 399, 747, 420
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 253, 399, 747, 420 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 253, 399, 747, 420. So, keep reading to learn more.
Given numbers are 253,399,747,420
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 253,399,747,420 is 502716060.
Find LCM of 253,399,747,420 with Prime Factorization
| 3 | 253, 399, 747, 420 |
| 7 | 253, 133, 249, 140 |
| 253, 19, 249, 20 |
Multiply the prime numbers at the bottom and the left side.
3 x 7 x 253 x 19 x 249 x 20 = 502716060
Therefore, the lowest common multiple of 253,399,747,420 is 502716060.
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.
253 x 399 x 747 x 420 = 31671111780
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.
253 : 1, 11, 23, 253
399 : 1, 3, 7, 19, 21, 57, 133, 399
747 : 1, 3, 9, 83, 249, 747
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 253,399,747,420, is 1.
Now, the common factors can be found like this.
253:11x 23
399:3x 7x 19
747:3x 3x 83
420:2x 2x 3x 5x 7
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 7 = 63
Therefore, the value for common factors is 63.
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 = 31671111780/(1x63)
LCM = 31671111780/63
LCM = 502716060
Thus, we can understand that the LCM of 253,399,747,420 is 502716060.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 253, 399, 747, 420
1. What is the LCM of 253, 399, 747, 420?
Answer: LCM of 253, 399, 747, 420 is 502716060.
2. How to calculate the LCM of 253, 399, 747, 420?
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 253, 399, 747, 420.
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}.