Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1239 and 1246 the smallest integer that is 220542 that is divisible by both numbers.
Least Common Multiple (LCM) of 1239 and 1246 is 220542.
LCM(1239,1246) = 220542
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 1239 and 1246. First we will calculate the prime factors of 1239 and 1246.
Prime Factorization of 1239
3 | 1239 |
7 | 413 |
59 | 59 |
1 |
Prime factors of 1239 are 3, 7,59. Prime factorization of 1239 in exponential form is:
1239 = 31×71×591
Prime Factorization of 1246
2 | 1246 |
7 | 623 |
89 | 89 |
1 |
Prime factors of 1246 are 2, 7,89. Prime factorization of 1246 in exponential form is:
1246 = 21×71×891
Now multiplying the highest exponent prime factors to calculate the LCM of 1239 and 1246.
LCM(1239,1246) = 21×31×71×591×891
LCM(1239,1246) = 220542
Factors of 1239
List of positive integer factors of 1239 that divides 1239 without a remainder.
1, 3, 7, 21, 59, 177, 413, 1239
Factors of 1246
List of positive integer factors of 1246 that divides 1246 without a remainder.
1, 2, 7, 14, 89, 178, 623, 1246
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1239 and 1246, than apply into the LCM equation.
GCF(1239,1246) = 7
LCM(1239,1246) = ( 1239 × 1246) / 7
LCM(1239,1246) = 1543794 / 7
LCM(1239,1246) = 220542
(i) The LCM of 1246 and 1239 is associative
LCM of 1239 and 1246 = LCM of 1246 and 1239
1. What is the LCM of 1239 and 1246?
Answer: LCM of 1239 and 1246 is 220542.
2. What are the Factors of 1239?
Answer: Factors of 1239 are 1, 3, 7, 21, 59, 177, 413, 1239. There are 8 integers that are factors of 1239. The greatest factor of 1239 is 1239.
3. What are the Factors of 1246?
Answer: Factors of 1246 are 1, 2, 7, 14, 89, 178, 623, 1246. There are 8 integers that are factors of 1246. The greatest factor of 1246 is 1246.
4. How to Find the LCM of 1239 and 1246?
Answer:
Least Common Multiple of 1239 and 1246 = 220542
Step 1: Find the prime factorization of 1239
1239 = 3 x 7 x 59
Step 2: Find the prime factorization of 1246
1246 = 2 x 7 x 89
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 220542 = 2 x 3 x 7 x 59 x 89
Step 4: Therefore, the least common multiple of 1239 and 1246 is 220542.