Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 2980 and 2985 the smallest integer that is 1779060 that is divisible by both numbers.
Least Common Multiple (LCM) of 2980 and 2985 is 1779060.
LCM(2980,2985) = 1779060
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 2980 and 2985. First we will calculate the prime factors of 2980 and 2985.
Prime Factorization of 2980
2 | 2980 |
2 | 1490 |
5 | 745 |
149 | 149 |
1 |
Prime factors of 2980 are 2, 5,149. Prime factorization of 2980 in exponential form is:
2980 = 22×51×1491
Prime Factorization of 2985
3 | 2985 |
5 | 995 |
199 | 199 |
1 |
Prime factors of 2985 are 3, 5,199. Prime factorization of 2985 in exponential form is:
2985 = 31×51×1991
Now multiplying the highest exponent prime factors to calculate the LCM of 2980 and 2985.
LCM(2980,2985) = 22×31×51×1491×1991
LCM(2980,2985) = 1779060
Factors of 2980
List of positive integer factors of 2980 that divides 2980 without a remainder.
1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980
Factors of 2985
List of positive integer factors of 2985 that divides 2985 without a remainder.
1, 3, 5, 15, 199, 597, 995, 2985
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2980 and 2985, than apply into the LCM equation.
GCF(2980,2985) = 5
LCM(2980,2985) = ( 2980 × 2985) / 5
LCM(2980,2985) = 8895300 / 5
LCM(2980,2985) = 1779060
(i) The LCM of 2985 and 2980 is associative
LCM of 2980 and 2985 = LCM of 2985 and 2980
1. What is the LCM of 2980 and 2985?
Answer: LCM of 2980 and 2985 is 1779060.
2. What are the Factors of 2980?
Answer: Factors of 2980 are 1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980. There are 12 integers that are factors of 2980. The greatest factor of 2980 is 2980.
3. What are the Factors of 2985?
Answer: Factors of 2985 are 1, 3, 5, 15, 199, 597, 995, 2985. There are 8 integers that are factors of 2985. The greatest factor of 2985 is 2985.
4. How to Find the LCM of 2980 and 2985?
Answer:
Least Common Multiple of 2980 and 2985 = 1779060
Step 1: Find the prime factorization of 2980
2980 = 2 x 2 x 5 x 149
Step 2: Find the prime factorization of 2985
2985 = 3 x 5 x 199
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1779060 = 2 x 2 x 3 x 5 x 149 x 199
Step 4: Therefore, the least common multiple of 2980 and 2985 is 1779060.