Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1228 and 1235 the smallest integer that is 1516580 that is divisible by both numbers.
Least Common Multiple (LCM) of 1228 and 1235 is 1516580.
LCM(1228,1235) = 1516580
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 1228 and 1235. First we will calculate the prime factors of 1228 and 1235.
Prime Factorization of 1228
2 | 1228 |
2 | 614 |
307 | 307 |
1 |
Prime factors of 1228 are 2,307. Prime factorization of 1228 in exponential form is:
1228 = 22×3071
Prime Factorization of 1235
5 | 1235 |
13 | 247 |
19 | 19 |
1 |
Prime factors of 1235 are 5, 13,19. Prime factorization of 1235 in exponential form is:
1235 = 51×131×191
Now multiplying the highest exponent prime factors to calculate the LCM of 1228 and 1235.
LCM(1228,1235) = 22×51×131×191×3071
LCM(1228,1235) = 1516580
Factors of 1228
List of positive integer factors of 1228 that divides 1228 without a remainder.
1, 2, 4, 307, 614, 1228
Factors of 1235
List of positive integer factors of 1235 that divides 1235 without a remainder.
1, 5, 13, 19, 65, 95, 247, 1235
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1228 and 1235, than apply into the LCM equation.
GCF(1228,1235) = 1
LCM(1228,1235) = ( 1228 × 1235) / 1
LCM(1228,1235) = 1516580 / 1
LCM(1228,1235) = 1516580
(i) The LCM of 1235 and 1228 is associative
LCM of 1228 and 1235 = LCM of 1235 and 1228
1. What is the LCM of 1228 and 1235?
Answer: LCM of 1228 and 1235 is 1516580.
2. What are the Factors of 1228?
Answer: Factors of 1228 are 1, 2, 4, 307, 614, 1228. There are 6 integers that are factors of 1228. The greatest factor of 1228 is 1228.
3. What are the Factors of 1235?
Answer: Factors of 1235 are 1, 5, 13, 19, 65, 95, 247, 1235. There are 8 integers that are factors of 1235. The greatest factor of 1235 is 1235.
4. How to Find the LCM of 1228 and 1235?
Answer:
Least Common Multiple of 1228 and 1235 = 1516580
Step 1: Find the prime factorization of 1228
1228 = 2 x 2 x 307
Step 2: Find the prime factorization of 1235
1235 = 5 x 13 x 19
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1516580 = 2 x 2 x 5 x 13 x 19 x 307
Step 4: Therefore, the least common multiple of 1228 and 1235 is 1516580.