Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 245 and 249 the smallest integer that is 61005 that is divisible by both numbers.
Least Common Multiple (LCM) of 245 and 249 is 61005.
LCM(245,249) = 61005
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 245 and 249. First we will calculate the prime factors of 245 and 249.
Prime Factorization of 245
5 | 245 |
7 | 49 |
7 | 7 |
1 |
Prime factors of 245 are 5,7. Prime factorization of 245 in exponential form is:
245 = 51×72
Prime Factorization of 249
3 | 249 |
83 | 83 |
1 |
Prime factors of 249 are 3,83. Prime factorization of 249 in exponential form is:
249 = 31×831
Now multiplying the highest exponent prime factors to calculate the LCM of 245 and 249.
LCM(245,249) = 31×51×72×831
LCM(245,249) = 61005
Factors of 245
List of positive integer factors of 245 that divides 245 without a remainder.
1, 5, 7, 35, 49, 245
Factors of 249
List of positive integer factors of 249 that divides 249 without a remainder.
1, 3, 83, 249
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 245 and 249, than apply into the LCM equation.
GCF(245,249) = 1
LCM(245,249) = ( 245 × 249) / 1
LCM(245,249) = 61005 / 1
LCM(245,249) = 61005
(i) The LCM of 249 and 245 is associative
LCM of 245 and 249 = LCM of 249 and 245
1. What is the LCM of 245 and 249?
Answer: LCM of 245 and 249 is 61005.
2. What are the Factors of 245?
Answer: Factors of 245 are 1, 5, 7, 35, 49, 245. There are 6 integers that are factors of 245. The greatest factor of 245 is 245.
3. What are the Factors of 249?
Answer: Factors of 249 are 1, 3, 83, 249. There are 4 integers that are factors of 249. The greatest factor of 249 is 249.
4. How to Find the LCM of 245 and 249?
Answer:
Least Common Multiple of 245 and 249 = 61005
Step 1: Find the prime factorization of 245
245 = 5 x 7 x 7
Step 2: Find the prime factorization of 249
249 = 3 x 83
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 61005 = 3 x 5 x 7 x 7 x 83
Step 4: Therefore, the least common multiple of 245 and 249 is 61005.