Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1271 and 1278 the smallest integer that is 1624338 that is divisible by both numbers.
Least Common Multiple (LCM) of 1271 and 1278 is 1624338.
LCM(1271,1278) = 1624338
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 1271 and 1278. First we will calculate the prime factors of 1271 and 1278.
Prime Factorization of 1271
31 | 1271 |
41 | 41 |
1 |
Prime factors of 1271 are 31,41. Prime factorization of 1271 in exponential form is:
1271 = 311×411
Prime Factorization of 1278
2 | 1278 |
3 | 639 |
3 | 213 |
71 | 71 |
1 |
Prime factors of 1278 are 2, 3,71. Prime factorization of 1278 in exponential form is:
1278 = 21×32×711
Now multiplying the highest exponent prime factors to calculate the LCM of 1271 and 1278.
LCM(1271,1278) = 21×32×311×411×711
LCM(1271,1278) = 1624338
Factors of 1271
List of positive integer factors of 1271 that divides 1271 without a remainder.
1, 31, 41, 1271
Factors of 1278
List of positive integer factors of 1278 that divides 1278 without a remainder.
1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1271 and 1278, than apply into the LCM equation.
GCF(1271,1278) = 1
LCM(1271,1278) = ( 1271 × 1278) / 1
LCM(1271,1278) = 1624338 / 1
LCM(1271,1278) = 1624338
(i) The LCM of 1278 and 1271 is associative
LCM of 1271 and 1278 = LCM of 1278 and 1271
1. What is the LCM of 1271 and 1278?
Answer: LCM of 1271 and 1278 is 1624338.
2. What are the Factors of 1271?
Answer: Factors of 1271 are 1, 31, 41, 1271. There are 4 integers that are factors of 1271. The greatest factor of 1271 is 1271.
3. What are the Factors of 1278?
Answer: Factors of 1278 are 1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278. There are 12 integers that are factors of 1278. The greatest factor of 1278 is 1278.
4. How to Find the LCM of 1271 and 1278?
Answer:
Least Common Multiple of 1271 and 1278 = 1624338
Step 1: Find the prime factorization of 1271
1271 = 31 x 41
Step 2: Find the prime factorization of 1278
1278 = 2 x 3 x 3 x 71
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1624338 = 2 x 3 x 3 x 31 x 41 x 71
Step 4: Therefore, the least common multiple of 1271 and 1278 is 1624338.