Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1309 and 1315 the smallest integer that is 1721335 that is divisible by both numbers.
Least Common Multiple (LCM) of 1309 and 1315 is 1721335.
LCM(1309,1315) = 1721335
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 1309 and 1315. First we will calculate the prime factors of 1309 and 1315.
Prime Factorization of 1309
7 | 1309 |
11 | 187 |
17 | 17 |
1 |
Prime factors of 1309 are 7, 11,17. Prime factorization of 1309 in exponential form is:
1309 = 71×111×171
Prime Factorization of 1315
5 | 1315 |
263 | 263 |
1 |
Prime factors of 1315 are 5,263. Prime factorization of 1315 in exponential form is:
1315 = 51×2631
Now multiplying the highest exponent prime factors to calculate the LCM of 1309 and 1315.
LCM(1309,1315) = 51×71×111×171×2631
LCM(1309,1315) = 1721335
Factors of 1309
List of positive integer factors of 1309 that divides 1309 without a remainder.
1, 7, 11, 17, 77, 119, 187, 1309
Factors of 1315
List of positive integer factors of 1315 that divides 1315 without a remainder.
1, 5, 263, 1315
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1309 and 1315, than apply into the LCM equation.
GCF(1309,1315) = 1
LCM(1309,1315) = ( 1309 × 1315) / 1
LCM(1309,1315) = 1721335 / 1
LCM(1309,1315) = 1721335
(i) The LCM of 1315 and 1309 is associative
LCM of 1309 and 1315 = LCM of 1315 and 1309
1. What is the LCM of 1309 and 1315?
Answer: LCM of 1309 and 1315 is 1721335.
2. What are the Factors of 1309?
Answer: Factors of 1309 are 1, 7, 11, 17, 77, 119, 187, 1309. There are 8 integers that are factors of 1309. The greatest factor of 1309 is 1309.
3. What are the Factors of 1315?
Answer: Factors of 1315 are 1, 5, 263, 1315. There are 4 integers that are factors of 1315. The greatest factor of 1315 is 1315.
4. How to Find the LCM of 1309 and 1315?
Answer:
Least Common Multiple of 1309 and 1315 = 1721335
Step 1: Find the prime factorization of 1309
1309 = 7 x 11 x 17
Step 2: Find the prime factorization of 1315
1315 = 5 x 263
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1721335 = 5 x 7 x 11 x 17 x 263
Step 4: Therefore, the least common multiple of 1309 and 1315 is 1721335.