Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 217 and 218 the smallest integer that is 47306 that is divisible by both numbers.
Least Common Multiple (LCM) of 217 and 218 is 47306.
LCM(217,218) = 47306
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 217 and 218. First we will calculate the prime factors of 217 and 218.
Prime Factorization of 217
7 | 217 |
31 | 31 |
1 |
Prime factors of 217 are 7,31. Prime factorization of 217 in exponential form is:
217 = 71×311
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 217 and 218.
LCM(217,218) = 21×71×311×1091
LCM(217,218) = 47306
Factors of 217
List of positive integer factors of 217 that divides 217 without a remainder.
1, 7, 31, 217
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 217 and 218, than apply into the LCM equation.
GCF(217,218) = 1
LCM(217,218) = ( 217 × 218) / 1
LCM(217,218) = 47306 / 1
LCM(217,218) = 47306
(i) The LCM of 218 and 217 is associative
LCM of 217 and 218 = LCM of 218 and 217
1. What is the LCM of 217 and 218?
Answer: LCM of 217 and 218 is 47306.
2. What are the Factors of 217?
Answer: Factors of 217 are 1, 7, 31, 217. There are 4 integers that are factors of 217. The greatest factor of 217 is 217.
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 217 and 218?
Answer:
Least Common Multiple of 217 and 218 = 47306
Step 1: Find the prime factorization of 217
217 = 7 x 31
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 = 47306 = 2 x 7 x 31 x 109
Step 4: Therefore, the least common multiple of 217 and 218 is 47306.