Is 2385 is a composite number or not ?
- As we already know that, the number having factors 1 and the number itself is the prime number.
- And numbers having more than these two factors are the composite numbers.
- To check whether the number 2385 is composite or not first we have to find its factors.
Contents
Factors of 2385:
- If we have taken numbers from 1, 2, 3…for checking factors of 2385, we found that 2385 has factors 1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795 and 2385. Hence, we must say that 2385 is a composite number.
- Thus, 2385 is the composite number.
- If we multiply 2385 by 1, 2, 3 then we get the multiples of 2385 which are 2385, 4770 and so on.
2385 is a Composite number or Prime number
About the number 2385:
- 2385 has more than two factors which are 1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795 and 2385 and hence it is the composite number.
- 2385 is the odd composite number and it is not the perfect square also.
- If we divide 2385 by 1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795 and 2385 then we get remainder as zero. Hence, 1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795 and 2385 are the factors of 2385
Note:
- 2385 is not the perfect square.
- Factors of 2385: 1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795 and 2385
- Prime factors of 2385: 3, 5, 53
Conclusion:
- 2385 is the composite number which has factors 1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795 and 2385.
- And hence, 2385 is not the prime number.
Multiple Choice Questions:
1) 2385 is a
a) odd number
b) Prime number
c) Composite number
d) Both a and c
Ans: d) both a and c
2) The prime factors of a composite number 2385 are
a) 1
b) 3, 5, 53
c) 1 and 2385
d) 1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795 and 2385
Ans: b) 3, 5, 53
3) 2385 is the composite number because
a) It has factors 1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795 and 2385
b) It has more than two factors
c) It is not divisible by 2
d) Both a and b
Ans: d) both a and b