Given numbers are 842,424,421,645

The least common multiple of numbers can be find using the prime factorization method or LCM formula.

The LCM of 842,424,421,645 is 115135080.

Find LCM of 842,424,421,645 with Prime Factorization

Multiply the prime numbers at the bottom and the left side.

2 x 421 x 1 x 212 x 1 x 645 = 115135080

Therefore, the lowest common multiple of 842,424,421,645 is 115135080.

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.

842 x 424 x 421 x 645 = 96943737360

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.

842 : 1, 2, 421, 842

424 : 1, 2, 4, 8, 53, 106, 212, 424

421 : 1, 421

645 : 1, 3, 5, 15, 43, 129, 215, 645

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 842,424,421,645, is 1.

Now, the common factors can be found like this.

842:2x 421

424:2x 2x 2x 53

421:421

645:3x 5x 43

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 = 96943737360/(1x842)

LCM = 96943737360/842

LCM = 115135080

Thus, we can understand that the LCM of 842,424,421,645 is 115135080.

Here are some samples of LCM of two or more Numbers calculations.

• LCM of 233, 765, 807, 647
• LCM of 643, 630, 262, 554
• LCM of 658, 893, 772, 412
• LCM of 794, 991, 413, 911
• LCM of 517, 427, 292, 225

1. What is the LCM of 842, 424, 421, 645?

Answer: LCM of 842, 424, 421, 645 is 115135080.

2. How to calculate the LCM of 842, 424, 421, 645?

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 842, 424, 421, 645.

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}.