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 694 the smallest integer that is 239430 that is divisible by both numbers.
Least Common Multiple (LCM) of 690 and 694 is 239430.
LCM(690,694) = 239430
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 694. First we will calculate the prime factors of 690 and 694.
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 694
2 | 694 |
347 | 347 |
1 |
Prime factors of 694 are 2,347. Prime factorization of 694 in exponential form is:
694 = 21×3471
Now multiplying the highest exponent prime factors to calculate the LCM of 690 and 694.
LCM(690,694) = 21×31×51×231×3471
LCM(690,694) = 239430
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 694
List of positive integer factors of 694 that divides 694 without a remainder.
1, 2, 347, 694
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 690 and 694, than apply into the LCM equation.
GCF(690,694) = 2
LCM(690,694) = ( 690 × 694) / 2
LCM(690,694) = 478860 / 2
LCM(690,694) = 239430
(i) The LCM of 694 and 690 is associative
LCM of 690 and 694 = LCM of 694 and 690
1. What is the LCM of 690 and 694?
Answer: LCM of 690 and 694 is 239430.
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 694?
Answer: Factors of 694 are 1, 2, 347, 694. There are 4 integers that are factors of 694. The greatest factor of 694 is 694.
4. How to Find the LCM of 690 and 694?
Answer:
Least Common Multiple of 690 and 694 = 239430
Step 1: Find the prime factorization of 690
690 = 2 x 3 x 5 x 23
Step 2: Find the prime factorization of 694
694 = 2 x 347
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 239430 = 2 x 3 x 5 x 23 x 347
Step 4: Therefore, the least common multiple of 690 and 694 is 239430.