Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1238 and 1246 the smallest integer that is 771274 that is divisible by both numbers.
Least Common Multiple (LCM) of 1238 and 1246 is 771274.
LCM(1238,1246) = 771274
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 1238 and 1246. First we will calculate the prime factors of 1238 and 1246.
Prime Factorization of 1238
2 | 1238 |
619 | 619 |
1 |
Prime factors of 1238 are 2,619. Prime factorization of 1238 in exponential form is:
1238 = 21×6191
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 1238 and 1246.
LCM(1238,1246) = 21×71×891×6191
LCM(1238,1246) = 771274
Factors of 1238
List of positive integer factors of 1238 that divides 1238 without a remainder.
1, 2, 619, 1238
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 1238 and 1246, than apply into the LCM equation.
GCF(1238,1246) = 2
LCM(1238,1246) = ( 1238 × 1246) / 2
LCM(1238,1246) = 1542548 / 2
LCM(1238,1246) = 771274
(i) The LCM of 1246 and 1238 is associative
LCM of 1238 and 1246 = LCM of 1246 and 1238
1. What is the LCM of 1238 and 1246?
Answer: LCM of 1238 and 1246 is 771274.
2. What are the Factors of 1238?
Answer: Factors of 1238 are 1, 2, 619, 1238. There are 4 integers that are factors of 1238. The greatest factor of 1238 is 1238.
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 1238 and 1246?
Answer:
Least Common Multiple of 1238 and 1246 = 771274
Step 1: Find the prime factorization of 1238
1238 = 2 x 619
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 = 771274 = 2 x 7 x 89 x 619
Step 4: Therefore, the least common multiple of 1238 and 1246 is 771274.