LCM of 407, 978, 842, 421
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 407, 978, 842, 421 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 407, 978, 842, 421. So, keep reading to learn more.
Given numbers are 407,978,842,421
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 407,978,842,421 is 167577366.
Find LCM of 407,978,842,421 with Prime Factorization
| 2 | 407, 978, 842, 421 |
| 421 | 407, 489, 421, 421 |
| 407, 489, 1, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 421 x 407 x 489 x 1 x 1 = 167577366
Therefore, the lowest common multiple of 407,978,842,421 is 167577366.
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.
407 x 978 x 842 x 421 = 141100142172
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.
407 : 1, 11, 37, 407
978 : 1, 2, 3, 6, 163, 326, 489, 978
842 : 1, 2, 421, 842
421 : 1, 421
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 407,978,842,421, is 1.
Now, the common factors can be found like this.
407:11x 37
978:2x 3x 163
842:2x 421
421:421
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 421 = 842
Therefore, the value for common factors is 842.
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 = 141100142172/(1x842)
LCM = 141100142172/842
LCM = 167577366
Thus, we can understand that the LCM of 407,978,842,421 is 167577366.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 407, 978, 842, 421
1. What is the LCM of 407, 978, 842, 421?
Answer: LCM of 407, 978, 842, 421 is 167577366.
2. How to calculate the LCM of 407, 978, 842, 421?
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 407, 978, 842, 421.
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}.