Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 215 and 218 the smallest integer that is 46870 that is divisible by both numbers.
Least Common Multiple (LCM) of 215 and 218 is 46870.
LCM(215,218) = 46870
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 215 and 218. First we will calculate the prime factors of 215 and 218.
Prime Factorization of 215
5 | 215 |
43 | 43 |
1 |
Prime factors of 215 are 5,43. Prime factorization of 215 in exponential form is:
215 = 51×431
Prime Factorization of 218
2 | 218 |
109 | 109 |
1 |
Prime factors of 218 are 2,109. Prime factorization of 218 in exponential form is:
218 = 21×1091
Now multiplying the highest exponent prime factors to calculate the LCM of 215 and 218.
LCM(215,218) = 21×51×431×1091
LCM(215,218) = 46870
Factors of 215
List of positive integer factors of 215 that divides 215 without a remainder.
1, 5, 43, 215
Factors of 218
List of positive integer factors of 218 that divides 218 without a remainder.
1, 2, 109, 218
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 215 and 218, than apply into the LCM equation.
GCF(215,218) = 1
LCM(215,218) = ( 215 × 218) / 1
LCM(215,218) = 46870 / 1
LCM(215,218) = 46870
(i) The LCM of 218 and 215 is associative
LCM of 215 and 218 = LCM of 218 and 215
1. What is the LCM of 215 and 218?
Answer: LCM of 215 and 218 is 46870.
2. What are the Factors of 215?
Answer: Factors of 215 are 1, 5, 43, 215. There are 4 integers that are factors of 215. The greatest factor of 215 is 215.
3. What are the Factors of 218?
Answer: Factors of 218 are 1, 2, 109, 218. There are 4 integers that are factors of 218. The greatest factor of 218 is 218.
4. How to Find the LCM of 215 and 218?
Answer:
Least Common Multiple of 215 and 218 = 46870
Step 1: Find the prime factorization of 215
215 = 5 x 43
Step 2: Find the prime factorization of 218
218 = 2 x 109
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 46870 = 2 x 5 x 43 x 109
Step 4: Therefore, the least common multiple of 215 and 218 is 46870.