Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1284 and 1292 the smallest integer that is 414732 that is divisible by both numbers.
Least Common Multiple (LCM) of 1284 and 1292 is 414732.
LCM(1284,1292) = 414732
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 1284 and 1292. First we will calculate the prime factors of 1284 and 1292.
Prime Factorization of 1284
2 | 1284 |
2 | 642 |
3 | 321 |
107 | 107 |
1 |
Prime factors of 1284 are 2, 3,107. Prime factorization of 1284 in exponential form is:
1284 = 22×31×1071
Prime Factorization of 1292
2 | 1292 |
2 | 646 |
17 | 323 |
19 | 19 |
1 |
Prime factors of 1292 are 2, 17,19. Prime factorization of 1292 in exponential form is:
1292 = 22×171×191
Now multiplying the highest exponent prime factors to calculate the LCM of 1284 and 1292.
LCM(1284,1292) = 22×31×171×191×1071
LCM(1284,1292) = 414732
Factors of 1284
List of positive integer factors of 1284 that divides 1284 without a remainder.
1, 2, 3, 4, 6, 12, 107, 214, 321, 428, 642, 1284
Factors of 1292
List of positive integer factors of 1292 that divides 1292 without a remainder.
1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 646, 1292
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1284 and 1292, than apply into the LCM equation.
GCF(1284,1292) = 4
LCM(1284,1292) = ( 1284 × 1292) / 4
LCM(1284,1292) = 1658928 / 4
LCM(1284,1292) = 414732
(i) The LCM of 1292 and 1284 is associative
LCM of 1284 and 1292 = LCM of 1292 and 1284
1. What is the LCM of 1284 and 1292?
Answer: LCM of 1284 and 1292 is 414732.
2. What are the Factors of 1284?
Answer: Factors of 1284 are 1, 2, 3, 4, 6, 12, 107, 214, 321, 428, 642, 1284. There are 12 integers that are factors of 1284. The greatest factor of 1284 is 1284.
3. What are the Factors of 1292?
Answer: Factors of 1292 are 1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 646, 1292. There are 12 integers that are factors of 1292. The greatest factor of 1292 is 1292.
4. How to Find the LCM of 1284 and 1292?
Answer:
Least Common Multiple of 1284 and 1292 = 414732
Step 1: Find the prime factorization of 1284
1284 = 2 x 2 x 3 x 107
Step 2: Find the prime factorization of 1292
1292 = 2 x 2 x 17 x 19
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 414732 = 2 x 2 x 3 x 17 x 19 x 107
Step 4: Therefore, the least common multiple of 1284 and 1292 is 414732.