Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1689 and 1695 the smallest integer that is 954285 that is divisible by both numbers.
Least Common Multiple (LCM) of 1689 and 1695 is 954285.
LCM(1689,1695) = 954285
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 1689 and 1695. First we will calculate the prime factors of 1689 and 1695.
Prime Factorization of 1689
3 | 1689 |
563 | 563 |
1 |
Prime factors of 1689 are 3,563. Prime factorization of 1689 in exponential form is:
1689 = 31×5631
Prime Factorization of 1695
3 | 1695 |
5 | 565 |
113 | 113 |
1 |
Prime factors of 1695 are 3, 5,113. Prime factorization of 1695 in exponential form is:
1695 = 31×51×1131
Now multiplying the highest exponent prime factors to calculate the LCM of 1689 and 1695.
LCM(1689,1695) = 31×51×1131×5631
LCM(1689,1695) = 954285
Factors of 1689
List of positive integer factors of 1689 that divides 1689 without a remainder.
1, 3, 563, 1689
Factors of 1695
List of positive integer factors of 1695 that divides 1695 without a remainder.
1, 3, 5, 15, 113, 339, 565, 1695
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1689 and 1695, than apply into the LCM equation.
GCF(1689,1695) = 3
LCM(1689,1695) = ( 1689 × 1695) / 3
LCM(1689,1695) = 2862855 / 3
LCM(1689,1695) = 954285
(i) The LCM of 1695 and 1689 is associative
LCM of 1689 and 1695 = LCM of 1695 and 1689
1. What is the LCM of 1689 and 1695?
Answer: LCM of 1689 and 1695 is 954285.
2. What are the Factors of 1689?
Answer: Factors of 1689 are 1, 3, 563, 1689. There are 4 integers that are factors of 1689. The greatest factor of 1689 is 1689.
3. What are the Factors of 1695?
Answer: Factors of 1695 are 1, 3, 5, 15, 113, 339, 565, 1695. There are 8 integers that are factors of 1695. The greatest factor of 1695 is 1695.
4. How to Find the LCM of 1689 and 1695?
Answer:
Least Common Multiple of 1689 and 1695 = 954285
Step 1: Find the prime factorization of 1689
1689 = 3 x 563
Step 2: Find the prime factorization of 1695
1695 = 3 x 5 x 113
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 954285 = 3 x 5 x 113 x 563
Step 4: Therefore, the least common multiple of 1689 and 1695 is 954285.