Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1278 and 1282 the smallest integer that is 819198 that is divisible by both numbers.
Least Common Multiple (LCM) of 1278 and 1282 is 819198.
LCM(1278,1282) = 819198
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 1278 and 1282. First we will calculate the prime factors of 1278 and 1282.
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
Prime Factorization of 1282
2 | 1282 |
641 | 641 |
1 |
Prime factors of 1282 are 2,641. Prime factorization of 1282 in exponential form is:
1282 = 21×6411
Now multiplying the highest exponent prime factors to calculate the LCM of 1278 and 1282.
LCM(1278,1282) = 21×32×711×6411
LCM(1278,1282) = 819198
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
Factors of 1282
List of positive integer factors of 1282 that divides 1282 without a remainder.
1, 2, 641, 1282
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1278 and 1282, than apply into the LCM equation.
GCF(1278,1282) = 2
LCM(1278,1282) = ( 1278 × 1282) / 2
LCM(1278,1282) = 1638396 / 2
LCM(1278,1282) = 819198
(i) The LCM of 1282 and 1278 is associative
LCM of 1278 and 1282 = LCM of 1282 and 1278
1. What is the LCM of 1278 and 1282?
Answer: LCM of 1278 and 1282 is 819198.
2. 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.
3. What are the Factors of 1282?
Answer: Factors of 1282 are 1, 2, 641, 1282. There are 4 integers that are factors of 1282. The greatest factor of 1282 is 1282.
4. How to Find the LCM of 1278 and 1282?
Answer:
Least Common Multiple of 1278 and 1282 = 819198
Step 1: Find the prime factorization of 1278
1278 = 2 x 3 x 3 x 71
Step 2: Find the prime factorization of 1282
1282 = 2 x 641
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 819198 = 2 x 3 x 3 x 71 x 641
Step 4: Therefore, the least common multiple of 1278 and 1282 is 819198.