Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 690 and 697 the smallest integer that is 480930 that is divisible by both numbers.
Least Common Multiple (LCM) of 690 and 697 is 480930.
LCM(690,697) = 480930
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 690 and 697. First we will calculate the prime factors of 690 and 697.
Prime Factorization of 690
2 | 690 |
3 | 345 |
5 | 115 |
23 | 23 |
1 |
Prime factors of 690 are 2, 3, 5,23. Prime factorization of 690 in exponential form is:
690 = 21×31×51×231
Prime Factorization of 697
17 | 697 |
41 | 41 |
1 |
Prime factors of 697 are 17,41. Prime factorization of 697 in exponential form is:
697 = 171×411
Now multiplying the highest exponent prime factors to calculate the LCM of 690 and 697.
LCM(690,697) = 21×31×51×171×231×411
LCM(690,697) = 480930
Factors of 690
List of positive integer factors of 690 that divides 690 without a remainder.
1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
Factors of 697
List of positive integer factors of 697 that divides 697 without a remainder.
1, 17, 41, 697
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 690 and 697, than apply into the LCM equation.
GCF(690,697) = 1
LCM(690,697) = ( 690 × 697) / 1
LCM(690,697) = 480930 / 1
LCM(690,697) = 480930
(i) The LCM of 697 and 690 is associative
LCM of 690 and 697 = LCM of 697 and 690
1. What is the LCM of 690 and 697?
Answer: LCM of 690 and 697 is 480930.
2. What are the Factors of 690?
Answer: Factors of 690 are 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690. There are 16 integers that are factors of 690. The greatest factor of 690 is 690.
3. What are the Factors of 697?
Answer: Factors of 697 are 1, 17, 41, 697. There are 4 integers that are factors of 697. The greatest factor of 697 is 697.
4. How to Find the LCM of 690 and 697?
Answer:
Least Common Multiple of 690 and 697 = 480930
Step 1: Find the prime factorization of 690
690 = 2 x 3 x 5 x 23
Step 2: Find the prime factorization of 697
697 = 17 x 41
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 480930 = 2 x 3 x 5 x 17 x 23 x 41
Step 4: Therefore, the least common multiple of 690 and 697 is 480930.