Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 290 and 291 the smallest integer that is 84390 that is divisible by both numbers.
Least Common Multiple (LCM) of 290 and 291 is 84390.
LCM(290,291) = 84390
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 290 and 291. First we will calculate the prime factors of 290 and 291.
Prime Factorization of 290
2 | 290 |
5 | 145 |
29 | 29 |
1 |
Prime factors of 290 are 2, 5,29. Prime factorization of 290 in exponential form is:
290 = 21×51×291
Prime Factorization of 291
3 | 291 |
97 | 97 |
1 |
Prime factors of 291 are 3,97. Prime factorization of 291 in exponential form is:
291 = 31×971
Now multiplying the highest exponent prime factors to calculate the LCM of 290 and 291.
LCM(290,291) = 21×31×51×291×971
LCM(290,291) = 84390
Factors of 290
List of positive integer factors of 290 that divides 290 without a remainder.
1, 2, 5, 10, 29, 58, 145, 290
Factors of 291
List of positive integer factors of 291 that divides 291 without a remainder.
1, 3, 97, 291
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 290 and 291, than apply into the LCM equation.
GCF(290,291) = 1
LCM(290,291) = ( 290 × 291) / 1
LCM(290,291) = 84390 / 1
LCM(290,291) = 84390
(i) The LCM of 291 and 290 is associative
LCM of 290 and 291 = LCM of 291 and 290
1. What is the LCM of 290 and 291?
Answer: LCM of 290 and 291 is 84390.
2. What are the Factors of 290?
Answer: Factors of 290 are 1, 2, 5, 10, 29, 58, 145, 290. There are 8 integers that are factors of 290. The greatest factor of 290 is 290.
3. What are the Factors of 291?
Answer: Factors of 291 are 1, 3, 97, 291. There are 4 integers that are factors of 291. The greatest factor of 291 is 291.
4. How to Find the LCM of 290 and 291?
Answer:
Least Common Multiple of 290 and 291 = 84390
Step 1: Find the prime factorization of 290
290 = 2 x 5 x 29
Step 2: Find the prime factorization of 291
291 = 3 x 97
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 84390 = 2 x 3 x 5 x 29 x 97
Step 4: Therefore, the least common multiple of 290 and 291 is 84390.