Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 287 and 288 the smallest integer that is 82656 that is divisible by both numbers.
Least Common Multiple (LCM) of 287 and 288 is 82656.
LCM(287,288) = 82656
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 287 and 288. First we will calculate the prime factors of 287 and 288.
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
Prime Factorization of 288
2 | 288 |
2 | 144 |
2 | 72 |
2 | 36 |
2 | 18 |
3 | 9 |
3 | 3 |
1 |
Prime factors of 288 are 2,3. Prime factorization of 288 in exponential form is:
288 = 25×32
Now multiplying the highest exponent prime factors to calculate the LCM of 287 and 288.
LCM(287,288) = 25×32×71×411
LCM(287,288) = 82656
Factors of 287
List of positive integer factors of 287 that divides 287 without a remainder.
1, 7, 41, 287
Factors of 288
List of positive integer factors of 288 that divides 288 without a remainder.
1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 288
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 287 and 288, than apply into the LCM equation.
GCF(287,288) = 1
LCM(287,288) = ( 287 × 288) / 1
LCM(287,288) = 82656 / 1
LCM(287,288) = 82656
(i) The LCM of 288 and 287 is associative
LCM of 287 and 288 = LCM of 288 and 287
1. What is the LCM of 287 and 288?
Answer: LCM of 287 and 288 is 82656.
2. 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.
3. What are the Factors of 288?
Answer: Factors of 288 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 288. There are 18 integers that are factors of 288. The greatest factor of 288 is 288.
4. How to Find the LCM of 287 and 288?
Answer:
Least Common Multiple of 287 and 288 = 82656
Step 1: Find the prime factorization of 287
287 = 7 x 41
Step 2: Find the prime factorization of 288
288 = 2 x 2 x 2 x 2 x 2 x 3 x 3
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 82656 = 2 x 2 x 2 x 2 x 2 x 3 x 3 x 7 x 41
Step 4: Therefore, the least common multiple of 287 and 288 is 82656.