Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 2978 and 2986 the smallest integer that is 4446154 that is divisible by both numbers.
Least Common Multiple (LCM) of 2978 and 2986 is 4446154.
LCM(2978,2986) = 4446154
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 2978 and 2986. First we will calculate the prime factors of 2978 and 2986.
Prime Factorization of 2978
2 | 2978 |
1489 | 1489 |
1 |
Prime factors of 2978 are 2,1489. Prime factorization of 2978 in exponential form is:
2978 = 21×14891
Prime Factorization of 2986
2 | 2986 |
1493 | 1493 |
1 |
Prime factors of 2986 are 2,1493. Prime factorization of 2986 in exponential form is:
2986 = 21×14931
Now multiplying the highest exponent prime factors to calculate the LCM of 2978 and 2986.
LCM(2978,2986) = 21×14891×14931
LCM(2978,2986) = 4446154
Factors of 2978
List of positive integer factors of 2978 that divides 2978 without a remainder.
1, 2, 1489, 2978
Factors of 2986
List of positive integer factors of 2986 that divides 2986 without a remainder.
1, 2, 1493, 2986
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2978 and 2986, than apply into the LCM equation.
GCF(2978,2986) = 2
LCM(2978,2986) = ( 2978 × 2986) / 2
LCM(2978,2986) = 8892308 / 2
LCM(2978,2986) = 4446154
(i) The LCM of 2986 and 2978 is associative
LCM of 2978 and 2986 = LCM of 2986 and 2978
1. What is the LCM of 2978 and 2986?
Answer: LCM of 2978 and 2986 is 4446154.
2. What are the Factors of 2978?
Answer: Factors of 2978 are 1, 2, 1489, 2978. There are 4 integers that are factors of 2978. The greatest factor of 2978 is 2978.
3. What are the Factors of 2986?
Answer: Factors of 2986 are 1, 2, 1493, 2986. There are 4 integers that are factors of 2986. The greatest factor of 2986 is 2986.
4. How to Find the LCM of 2978 and 2986?
Answer:
Least Common Multiple of 2978 and 2986 = 4446154
Step 1: Find the prime factorization of 2978
2978 = 2 x 1489
Step 2: Find the prime factorization of 2986
2986 = 2 x 1493
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 4446154 = 2 x 1489 x 1493
Step 4: Therefore, the least common multiple of 2978 and 2986 is 4446154.