Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1340 and 1345 the smallest integer that is 360460 that is divisible by both numbers.
Least Common Multiple (LCM) of 1340 and 1345 is 360460.
LCM(1340,1345) = 360460
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 1340 and 1345. First we will calculate the prime factors of 1340 and 1345.
Prime Factorization of 1340
2 | 1340 |
2 | 670 |
5 | 335 |
67 | 67 |
1 |
Prime factors of 1340 are 2, 5,67. Prime factorization of 1340 in exponential form is:
1340 = 22×51×671
Prime Factorization of 1345
5 | 1345 |
269 | 269 |
1 |
Prime factors of 1345 are 5,269. Prime factorization of 1345 in exponential form is:
1345 = 51×2691
Now multiplying the highest exponent prime factors to calculate the LCM of 1340 and 1345.
LCM(1340,1345) = 22×51×671×2691
LCM(1340,1345) = 360460
Factors of 1340
List of positive integer factors of 1340 that divides 1340 without a remainder.
1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340
Factors of 1345
List of positive integer factors of 1345 that divides 1345 without a remainder.
1, 5, 269, 1345
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1340 and 1345, than apply into the LCM equation.
GCF(1340,1345) = 5
LCM(1340,1345) = ( 1340 × 1345) / 5
LCM(1340,1345) = 1802300 / 5
LCM(1340,1345) = 360460
(i) The LCM of 1345 and 1340 is associative
LCM of 1340 and 1345 = LCM of 1345 and 1340
1. What is the LCM of 1340 and 1345?
Answer: LCM of 1340 and 1345 is 360460.
2. What are the Factors of 1340?
Answer: Factors of 1340 are 1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340. There are 12 integers that are factors of 1340. The greatest factor of 1340 is 1340.
3. What are the Factors of 1345?
Answer: Factors of 1345 are 1, 5, 269, 1345. There are 4 integers that are factors of 1345. The greatest factor of 1345 is 1345.
4. How to Find the LCM of 1340 and 1345?
Answer:
Least Common Multiple of 1340 and 1345 = 360460
Step 1: Find the prime factorization of 1340
1340 = 2 x 2 x 5 x 67
Step 2: Find the prime factorization of 1345
1345 = 5 x 269
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 360460 = 2 x 2 x 5 x 67 x 269
Step 4: Therefore, the least common multiple of 1340 and 1345 is 360460.