Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1670 and 1678 the smallest integer that is 1401130 that is divisible by both numbers.
Least Common Multiple (LCM) of 1670 and 1678 is 1401130.
LCM(1670,1678) = 1401130
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 1670 and 1678. First we will calculate the prime factors of 1670 and 1678.
Prime Factorization of 1670
2 | 1670 |
5 | 835 |
167 | 167 |
1 |
Prime factors of 1670 are 2, 5,167. Prime factorization of 1670 in exponential form is:
1670 = 21×51×1671
Prime Factorization of 1678
2 | 1678 |
839 | 839 |
1 |
Prime factors of 1678 are 2,839. Prime factorization of 1678 in exponential form is:
1678 = 21×8391
Now multiplying the highest exponent prime factors to calculate the LCM of 1670 and 1678.
LCM(1670,1678) = 21×51×1671×8391
LCM(1670,1678) = 1401130
Factors of 1670
List of positive integer factors of 1670 that divides 1670 without a remainder.
1, 2, 5, 10, 167, 334, 835, 1670
Factors of 1678
List of positive integer factors of 1678 that divides 1678 without a remainder.
1, 2, 839, 1678
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1670 and 1678, than apply into the LCM equation.
GCF(1670,1678) = 2
LCM(1670,1678) = ( 1670 × 1678) / 2
LCM(1670,1678) = 2802260 / 2
LCM(1670,1678) = 1401130
(i) The LCM of 1678 and 1670 is associative
LCM of 1670 and 1678 = LCM of 1678 and 1670
1. What is the LCM of 1670 and 1678?
Answer: LCM of 1670 and 1678 is 1401130.
2. What are the Factors of 1670?
Answer: Factors of 1670 are 1, 2, 5, 10, 167, 334, 835, 1670. There are 8 integers that are factors of 1670. The greatest factor of 1670 is 1670.
3. What are the Factors of 1678?
Answer: Factors of 1678 are 1, 2, 839, 1678. There are 4 integers that are factors of 1678. The greatest factor of 1678 is 1678.
4. How to Find the LCM of 1670 and 1678?
Answer:
Least Common Multiple of 1670 and 1678 = 1401130
Step 1: Find the prime factorization of 1670
1670 = 2 x 5 x 167
Step 2: Find the prime factorization of 1678
1678 = 2 x 839
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1401130 = 2 x 5 x 167 x 839
Step 4: Therefore, the least common multiple of 1670 and 1678 is 1401130.