Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 2155 and 2161 the smallest integer that is 4656955 that is divisible by both numbers.
Least Common Multiple (LCM) of 2155 and 2161 is 4656955.
LCM(2155,2161) = 4656955
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 2155 and 2161. First we will calculate the prime factors of 2155 and 2161.
Prime Factorization of 2155
5 | 2155 |
431 | 431 |
1 |
Prime factors of 2155 are 5,431. Prime factorization of 2155 in exponential form is:
2155 = 51×4311
Prime Factorization of 2161
2161 | 2161 |
1 |
Prime factors of 2161 are 2161. Prime factorization of 2161 in exponential form is:
2161 = 21611
Now multiplying the highest exponent prime factors to calculate the LCM of 2155 and 2161.
LCM(2155,2161) = 51×4311×21611
LCM(2155,2161) = 4656955
Factors of 2155
List of positive integer factors of 2155 that divides 2155 without a remainder.
1, 5, 431, 2155
Factors of 2161
List of positive integer factors of 2161 that divides 2161 without a remainder.
1, 2161
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2155 and 2161, than apply into the LCM equation.
GCF(2155,2161) = 1
LCM(2155,2161) = ( 2155 × 2161) / 1
LCM(2155,2161) = 4656955 / 1
LCM(2155,2161) = 4656955
(i) The LCM of 2161 and 2155 is associative
LCM of 2155 and 2161 = LCM of 2161 and 2155
1. What is the LCM of 2155 and 2161?
Answer: LCM of 2155 and 2161 is 4656955.
2. What are the Factors of 2155?
Answer: Factors of 2155 are 1, 5, 431, 2155. There are 4 integers that are factors of 2155. The greatest factor of 2155 is 2155.
3. What are the Factors of 2161?
Answer: Factors of 2161 are 1, 2161. There are 2 integers that are factors of 2161. The greatest factor of 2161 is 2161.
4. How to Find the LCM of 2155 and 2161?
Answer:
Least Common Multiple of 2155 and 2161 = 4656955
Step 1: Find the prime factorization of 2155
2155 = 5 x 431
Step 2: Find the prime factorization of 2161
2161 = 2161
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 4656955 = 5 x 431 x 2161
Step 4: Therefore, the least common multiple of 2155 and 2161 is 4656955.