Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1376 and 1380 the smallest integer that is 474720 that is divisible by both numbers.
Least Common Multiple (LCM) of 1376 and 1380 is 474720.
LCM(1376,1380) = 474720
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 1376 and 1380. First we will calculate the prime factors of 1376 and 1380.
Prime Factorization of 1376
2 | 1376 |
2 | 688 |
2 | 344 |
2 | 172 |
2 | 86 |
43 | 43 |
1 |
Prime factors of 1376 are 2,43. Prime factorization of 1376 in exponential form is:
1376 = 25×431
Prime Factorization of 1380
2 | 1380 |
2 | 690 |
3 | 345 |
5 | 115 |
23 | 23 |
1 |
Prime factors of 1380 are 2, 3, 5,23. Prime factorization of 1380 in exponential form is:
1380 = 22×31×51×231
Now multiplying the highest exponent prime factors to calculate the LCM of 1376 and 1380.
LCM(1376,1380) = 25×31×51×231×431
LCM(1376,1380) = 474720
Factors of 1376
List of positive integer factors of 1376 that divides 1376 without a remainder.
1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 1376
Factors of 1380
List of positive integer factors of 1380 that divides 1380 without a remainder.
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1376 and 1380, than apply into the LCM equation.
GCF(1376,1380) = 4
LCM(1376,1380) = ( 1376 × 1380) / 4
LCM(1376,1380) = 1898880 / 4
LCM(1376,1380) = 474720
(i) The LCM of 1380 and 1376 is associative
LCM of 1376 and 1380 = LCM of 1380 and 1376
1. What is the LCM of 1376 and 1380?
Answer: LCM of 1376 and 1380 is 474720.
2. What are the Factors of 1376?
Answer: Factors of 1376 are 1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 1376. There are 12 integers that are factors of 1376. The greatest factor of 1376 is 1376.
3. What are the Factors of 1380?
Answer: Factors of 1380 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380. There are 24 integers that are factors of 1380. The greatest factor of 1380 is 1380.
4. How to Find the LCM of 1376 and 1380?
Answer:
Least Common Multiple of 1376 and 1380 = 474720
Step 1: Find the prime factorization of 1376
1376 = 2 x 2 x 2 x 2 x 2 x 43
Step 2: Find the prime factorization of 1380
1380 = 2 x 2 x 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 = 474720 = 2 x 2 x 2 x 2 x 2 x 3 x 5 x 23 x 43
Step 4: Therefore, the least common multiple of 1376 and 1380 is 474720.