Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 243 and 251 the smallest integer that is 60993 that is divisible by both numbers.
Least Common Multiple (LCM) of 243 and 251 is 60993.
LCM(243,251) = 60993
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 243 and 251. First we will calculate the prime factors of 243 and 251.
Prime Factorization of 243
3 | 243 |
3 | 81 |
3 | 27 |
3 | 9 |
3 | 3 |
1 |
Prime factors of 243 are 3. Prime factorization of 243 in exponential form is:
243 = 35
Prime Factorization of 251
251 | 251 |
1 |
Prime factors of 251 are 251. Prime factorization of 251 in exponential form is:
251 = 2511
Now multiplying the highest exponent prime factors to calculate the LCM of 243 and 251.
LCM(243,251) = 35×2511
LCM(243,251) = 60993
Factors of 243
List of positive integer factors of 243 that divides 243 without a remainder.
1, 3, 9, 27, 81, 243
Factors of 251
List of positive integer factors of 251 that divides 251 without a remainder.
1, 251
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 243 and 251, than apply into the LCM equation.
GCF(243,251) = 1
LCM(243,251) = ( 243 × 251) / 1
LCM(243,251) = 60993 / 1
LCM(243,251) = 60993
(i) The LCM of 251 and 243 is associative
LCM of 243 and 251 = LCM of 251 and 243
1. What is the LCM of 243 and 251?
Answer: LCM of 243 and 251 is 60993.
2. What are the Factors of 243?
Answer: Factors of 243 are 1, 3, 9, 27, 81, 243. There are 6 integers that are factors of 243. The greatest factor of 243 is 243.
3. What are the Factors of 251?
Answer: Factors of 251 are 1, 251. There are 2 integers that are factors of 251. The greatest factor of 251 is 251.
4. How to Find the LCM of 243 and 251?
Answer:
Least Common Multiple of 243 and 251 = 60993
Step 1: Find the prime factorization of 243
243 = 3 x 3 x 3 x 3 x 3
Step 2: Find the prime factorization of 251
251 = 251
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 60993 = 3 x 3 x 3 x 3 x 3 x 251
Step 4: Therefore, the least common multiple of 243 and 251 is 60993.