Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 838 and 842 the smallest integer that is 352798 that is divisible by both numbers.
Least Common Multiple (LCM) of 838 and 842 is 352798.
LCM(838,842) = 352798
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
Least common multiple can be found by multiplying the highest exponent prime factors of 838 and 842. First we will calculate the prime factors of 838 and 842.
Prime Factorization of 838
2 | 838 |
419 | 419 |
1 |
Prime factors of 838 are 2,419. Prime factorization of 838 in exponential form is:
838 = 21×4191
Prime Factorization of 842
2 | 842 |
421 | 421 |
1 |
Prime factors of 842 are 2,421. Prime factorization of 842 in exponential form is:
842 = 21×4211
Now multiplying the highest exponent prime factors to calculate the LCM of 838 and 842.
LCM(838,842) = 21×4191×4211
LCM(838,842) = 352798
Factors of 838
List of positive integer factors of 838 that divides 838 without a remainder.
1, 2, 419, 838
Factors of 842
List of positive integer factors of 842 that divides 842 without a remainder.
1, 2, 421, 842
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 838 and 842, than apply into the LCM equation.
GCF(838,842) = 2
LCM(838,842) = ( 838 × 842) / 2
LCM(838,842) = 705596 / 2
LCM(838,842) = 352798
(i) The LCM of 842 and 838 is associative
LCM of 838 and 842 = LCM of 842 and 838
1. What is the LCM of 838 and 842?
Answer: LCM of 838 and 842 is 352798.
2. What are the Factors of 838?
Answer: Factors of 838 are 1, 2, 419, 838. There are 4 integers that are factors of 838. The greatest factor of 838 is 838.
3. What are the Factors of 842?
Answer: Factors of 842 are 1, 2, 421, 842. There are 4 integers that are factors of 842. The greatest factor of 842 is 842.
4. How to Find the LCM of 838 and 842?
Answer:
Least Common Multiple of 838 and 842 = 352798
Step 1: Find the prime factorization of 838
838 = 2 x 419
Step 2: Find the prime factorization of 842
842 = 2 x 421
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 352798 = 2 x 419 x 421
Step 4: Therefore, the least common multiple of 838 and 842 is 352798.