Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 340 and 345 the smallest integer that is 23460 that is divisible by both numbers.
Least Common Multiple (LCM) of 340 and 345 is 23460.
LCM(340,345) = 23460
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 340 and 345. First we will calculate the prime factors of 340 and 345.
Prime Factorization of 340
2 | 340 |
2 | 170 |
5 | 85 |
17 | 17 |
1 |
Prime factors of 340 are 2, 5,17. Prime factorization of 340 in exponential form is:
340 = 22×51×171
Prime Factorization of 345
3 | 345 |
5 | 115 |
23 | 23 |
1 |
Prime factors of 345 are 3, 5,23. Prime factorization of 345 in exponential form is:
345 = 31×51×231
Now multiplying the highest exponent prime factors to calculate the LCM of 340 and 345.
LCM(340,345) = 22×31×51×171×231
LCM(340,345) = 23460
Factors of 340
List of positive integer factors of 340 that divides 340 without a remainder.
1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340
Factors of 345
List of positive integer factors of 345 that divides 345 without a remainder.
1, 3, 5, 15, 23, 69, 115, 345
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 340 and 345, than apply into the LCM equation.
GCF(340,345) = 5
LCM(340,345) = ( 340 × 345) / 5
LCM(340,345) = 117300 / 5
LCM(340,345) = 23460
(i) The LCM of 345 and 340 is associative
LCM of 340 and 345 = LCM of 345 and 340
1. What is the LCM of 340 and 345?
Answer: LCM of 340 and 345 is 23460.
2. What are the Factors of 340?
Answer: Factors of 340 are 1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340. There are 12 integers that are factors of 340. The greatest factor of 340 is 340.
3. What are the Factors of 345?
Answer: Factors of 345 are 1, 3, 5, 15, 23, 69, 115, 345. There are 8 integers that are factors of 345. The greatest factor of 345 is 345.
4. How to Find the LCM of 340 and 345?
Answer:
Least Common Multiple of 340 and 345 = 23460
Step 1: Find the prime factorization of 340
340 = 2 x 2 x 5 x 17
Step 2: Find the prime factorization of 345
345 = 3 x 5 x 23
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 23460 = 2 x 2 x 3 x 5 x 17 x 23
Step 4: Therefore, the least common multiple of 340 and 345 is 23460.