Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1211 and 1215 the smallest integer that is 1471365 that is divisible by both numbers.
Least Common Multiple (LCM) of 1211 and 1215 is 1471365.
LCM(1211,1215) = 1471365
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 1211 and 1215. First we will calculate the prime factors of 1211 and 1215.
Prime Factorization of 1211
7 | 1211 |
173 | 173 |
1 |
Prime factors of 1211 are 7,173. Prime factorization of 1211 in exponential form is:
1211 = 71×1731
Prime Factorization of 1215
3 | 1215 |
3 | 405 |
3 | 135 |
3 | 45 |
3 | 15 |
5 | 5 |
1 |
Prime factors of 1215 are 3,5. Prime factorization of 1215 in exponential form is:
1215 = 35×51
Now multiplying the highest exponent prime factors to calculate the LCM of 1211 and 1215.
LCM(1211,1215) = 35×51×71×1731
LCM(1211,1215) = 1471365
Factors of 1211
List of positive integer factors of 1211 that divides 1211 without a remainder.
1, 7, 173, 1211
Factors of 1215
List of positive integer factors of 1215 that divides 1215 without a remainder.
1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1211 and 1215, than apply into the LCM equation.
GCF(1211,1215) = 1
LCM(1211,1215) = ( 1211 × 1215) / 1
LCM(1211,1215) = 1471365 / 1
LCM(1211,1215) = 1471365
(i) The LCM of 1215 and 1211 is associative
LCM of 1211 and 1215 = LCM of 1215 and 1211
1. What is the LCM of 1211 and 1215?
Answer: LCM of 1211 and 1215 is 1471365.
2. What are the Factors of 1211?
Answer: Factors of 1211 are 1, 7, 173, 1211. There are 4 integers that are factors of 1211. The greatest factor of 1211 is 1211.
3. What are the Factors of 1215?
Answer: Factors of 1215 are 1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215. There are 12 integers that are factors of 1215. The greatest factor of 1215 is 1215.
4. How to Find the LCM of 1211 and 1215?
Answer:
Least Common Multiple of 1211 and 1215 = 1471365
Step 1: Find the prime factorization of 1211
1211 = 7 x 173
Step 2: Find the prime factorization of 1215
1215 = 3 x 3 x 3 x 3 x 3 x 5
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1471365 = 3 x 3 x 3 x 3 x 3 x 5 x 7 x 173
Step 4: Therefore, the least common multiple of 1211 and 1215 is 1471365.