Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 66981 and 66987 the smallest integer that is 1495618749 that is divisible by both numbers.
Least Common Multiple (LCM) of 66981 and 66987 is 1495618749.
LCM(66981,66987) = 1495618749
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 66981 and 66987. First we will calculate the prime factors of 66981 and 66987.
Prime Factorization of 66981
3 | 66981 |
83 | 22327 |
269 | 269 |
1 |
Prime factors of 66981 are 3, 83,269. Prime factorization of 66981 in exponential form is:
66981 = 31×831×2691
Prime Factorization of 66987
3 | 66987 |
3 | 22329 |
3 | 7443 |
3 | 2481 |
827 | 827 |
1 |
Prime factors of 66987 are 3,827. Prime factorization of 66987 in exponential form is:
66987 = 34×8271
Now multiplying the highest exponent prime factors to calculate the LCM of 66981 and 66987.
LCM(66981,66987) = 34×831×2691×8271
LCM(66981,66987) = 1495618749
Factors of 66981
List of positive integer factors of 66981 that divides 66981 without a remainder.
1, 3, 83, 249, 269, 807, 22327, 66981
Factors of 66987
List of positive integer factors of 66987 that divides 66987 without a remainder.
1, 3, 9, 27, 81, 827, 2481, 7443, 22329, 66987
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 66981 and 66987, than apply into the LCM equation.
GCF(66981,66987) = 3
LCM(66981,66987) = ( 66981 × 66987) / 3
LCM(66981,66987) = 4486856247 / 3
LCM(66981,66987) = 1495618749
(i) The LCM of 66987 and 66981 is associative
LCM of 66981 and 66987 = LCM of 66987 and 66981
1. What is the LCM of 66981 and 66987?
Answer: LCM of 66981 and 66987 is 1495618749.
2. What are the Factors of 66981?
Answer: Factors of 66981 are 1, 3, 83, 249, 269, 807, 22327, 66981. There are 8 integers that are factors of 66981. The greatest factor of 66981 is 66981.
3. What are the Factors of 66987?
Answer: Factors of 66987 are 1, 3, 9, 27, 81, 827, 2481, 7443, 22329, 66987. There are 10 integers that are factors of 66987. The greatest factor of 66987 is 66987.
4. How to Find the LCM of 66981 and 66987?
Answer:
Least Common Multiple of 66981 and 66987 = 1495618749
Step 1: Find the prime factorization of 66981
66981 = 3 x 83 x 269
Step 2: Find the prime factorization of 66987
66987 = 3 x 3 x 3 x 3 x 827
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1495618749 = 3 x 3 x 3 x 3 x 83 x 269 x 827
Step 4: Therefore, the least common multiple of 66981 and 66987 is 1495618749.