Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1372 and 1378 the smallest integer that is 945308 that is divisible by both numbers.
Least Common Multiple (LCM) of 1372 and 1378 is 945308.
LCM(1372,1378) = 945308
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 1372 and 1378. First we will calculate the prime factors of 1372 and 1378.
Prime Factorization of 1372
2 | 1372 |
2 | 686 |
7 | 343 |
7 | 49 |
7 | 7 |
1 |
Prime factors of 1372 are 2,7. Prime factorization of 1372 in exponential form is:
1372 = 22×73
Prime Factorization of 1378
2 | 1378 |
13 | 689 |
53 | 53 |
1 |
Prime factors of 1378 are 2, 13,53. Prime factorization of 1378 in exponential form is:
1378 = 21×131×531
Now multiplying the highest exponent prime factors to calculate the LCM of 1372 and 1378.
LCM(1372,1378) = 22×73×131×531
LCM(1372,1378) = 945308
Factors of 1372
List of positive integer factors of 1372 that divides 1372 without a remainder.
1, 2, 4, 7, 14, 28, 49, 98, 196, 343, 686, 1372
Factors of 1378
List of positive integer factors of 1378 that divides 1378 without a remainder.
1, 2, 13, 26, 53, 106, 689, 1378
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1372 and 1378, than apply into the LCM equation.
GCF(1372,1378) = 2
LCM(1372,1378) = ( 1372 × 1378) / 2
LCM(1372,1378) = 1890616 / 2
LCM(1372,1378) = 945308
(i) The LCM of 1378 and 1372 is associative
LCM of 1372 and 1378 = LCM of 1378 and 1372
1. What is the LCM of 1372 and 1378?
Answer: LCM of 1372 and 1378 is 945308.
2. What are the Factors of 1372?
Answer: Factors of 1372 are 1, 2, 4, 7, 14, 28, 49, 98, 196, 343, 686, 1372. There are 12 integers that are factors of 1372. The greatest factor of 1372 is 1372.
3. What are the Factors of 1378?
Answer: Factors of 1378 are 1, 2, 13, 26, 53, 106, 689, 1378. There are 8 integers that are factors of 1378. The greatest factor of 1378 is 1378.
4. How to Find the LCM of 1372 and 1378?
Answer:
Least Common Multiple of 1372 and 1378 = 945308
Step 1: Find the prime factorization of 1372
1372 = 2 x 2 x 7 x 7 x 7
Step 2: Find the prime factorization of 1378
1378 = 2 x 13 x 53
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 945308 = 2 x 2 x 7 x 7 x 7 x 13 x 53
Step 4: Therefore, the least common multiple of 1372 and 1378 is 945308.