Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 2138 and 2140 the smallest integer that is 2287660 that is divisible by both numbers.
Least Common Multiple (LCM) of 2138 and 2140 is 2287660.
LCM(2138,2140) = 2287660
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 2138 and 2140. First we will calculate the prime factors of 2138 and 2140.
Prime Factorization of 2138
2 | 2138 |
1069 | 1069 |
1 |
Prime factors of 2138 are 2,1069. Prime factorization of 2138 in exponential form is:
2138 = 21×10691
Prime Factorization of 2140
2 | 2140 |
2 | 1070 |
5 | 535 |
107 | 107 |
1 |
Prime factors of 2140 are 2, 5,107. Prime factorization of 2140 in exponential form is:
2140 = 22×51×1071
Now multiplying the highest exponent prime factors to calculate the LCM of 2138 and 2140.
LCM(2138,2140) = 22×51×1071×10691
LCM(2138,2140) = 2287660
Factors of 2138
List of positive integer factors of 2138 that divides 2138 without a remainder.
1, 2, 1069, 2138
Factors of 2140
List of positive integer factors of 2140 that divides 2140 without a remainder.
1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2138 and 2140, than apply into the LCM equation.
GCF(2138,2140) = 2
LCM(2138,2140) = ( 2138 × 2140) / 2
LCM(2138,2140) = 4575320 / 2
LCM(2138,2140) = 2287660
(i) The LCM of 2140 and 2138 is associative
LCM of 2138 and 2140 = LCM of 2140 and 2138
1. What is the LCM of 2138 and 2140?
Answer: LCM of 2138 and 2140 is 2287660.
2. What are the Factors of 2138?
Answer: Factors of 2138 are 1, 2, 1069, 2138. There are 4 integers that are factors of 2138. The greatest factor of 2138 is 2138.
3. What are the Factors of 2140?
Answer: Factors of 2140 are 1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140. There are 12 integers that are factors of 2140. The greatest factor of 2140 is 2140.
4. How to Find the LCM of 2138 and 2140?
Answer:
Least Common Multiple of 2138 and 2140 = 2287660
Step 1: Find the prime factorization of 2138
2138 = 2 x 1069
Step 2: Find the prime factorization of 2140
2140 = 2 x 2 x 5 x 107
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2287660 = 2 x 2 x 5 x 107 x 1069
Step 4: Therefore, the least common multiple of 2138 and 2140 is 2287660.