Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 286 and 287 the smallest integer that is 82082 that is divisible by both numbers.
Least Common Multiple (LCM) of 286 and 287 is 82082.
LCM(286,287) = 82082
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 286 and 287. First we will calculate the prime factors of 286 and 287.
Prime Factorization of 286
2 | 286 |
11 | 143 |
13 | 13 |
1 |
Prime factors of 286 are 2, 11,13. Prime factorization of 286 in exponential form is:
286 = 21×111×131
Prime Factorization of 287
7 | 287 |
41 | 41 |
1 |
Prime factors of 287 are 7,41. Prime factorization of 287 in exponential form is:
287 = 71×411
Now multiplying the highest exponent prime factors to calculate the LCM of 286 and 287.
LCM(286,287) = 21×71×111×131×411
LCM(286,287) = 82082
Factors of 286
List of positive integer factors of 286 that divides 286 without a remainder.
1, 2, 11, 13, 22, 26, 143, 286
Factors of 287
List of positive integer factors of 287 that divides 287 without a remainder.
1, 7, 41, 287
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 286 and 287, than apply into the LCM equation.
GCF(286,287) = 1
LCM(286,287) = ( 286 × 287) / 1
LCM(286,287) = 82082 / 1
LCM(286,287) = 82082
(i) The LCM of 287 and 286 is associative
LCM of 286 and 287 = LCM of 287 and 286
1. What is the LCM of 286 and 287?
Answer: LCM of 286 and 287 is 82082.
2. What are the Factors of 286?
Answer: Factors of 286 are 1, 2, 11, 13, 22, 26, 143, 286. There are 8 integers that are factors of 286. The greatest factor of 286 is 286.
3. What are the Factors of 287?
Answer: Factors of 287 are 1, 7, 41, 287. There are 4 integers that are factors of 287. The greatest factor of 287 is 287.
4. How to Find the LCM of 286 and 287?
Answer:
Least Common Multiple of 286 and 287 = 82082
Step 1: Find the prime factorization of 286
286 = 2 x 11 x 13
Step 2: Find the prime factorization of 287
287 = 7 x 41
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 82082 = 2 x 7 x 11 x 13 x 41
Step 4: Therefore, the least common multiple of 286 and 287 is 82082.