Is 2387 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 2387 is composite or not first we have to find its factors.
Contents
Factors of 2387:
- If we have taken numbers from 1, 2, 3…for checking factors of 2387, we found that 2387 has factors 1, 7, 11, 31, 77, 217, 341 and 2387. Hence, we must say that 2387 is a composite number.
- Thus, 2387 is the composite number.
- If we multiply 2387 by 1, 2, 3 then we get the multiples of 2387 which are 2387, 4774 and so on.
2387 is a Composite number or Prime number
About the number 2387:
- 2387 has more than two factors which are 1, 7, 11, 31, 77, 217, 341 and 2387 and hence it is the composite number.
- 2387 is the odd composite number and it is not the perfect square also.
- If we divide 2387 by 1, 7, 11, 31, 77, 217, 341 and 2387 then we get remainder as zero. Hence, 1, 7, 11, 31, 77, 217, 341 and 2387 are the factors of 2387
Note:
- 2387 is not the perfect square.
- Factors of 2387: 1, 7, 11, 31, 77, 217, 341 and 2387
- Prime factors of 2387: 7, 11, 31
Conclusion:
- 2387 is the composite number which has factors 1, 7, 11, 31, 77, 217, 341 and 2387.
- And hence, 2387 is not the prime number.
Multiple Choice Questions:
1) 2387 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 2387 are
a) 1
b) 7, 11, 31
c) 1 and 2387
d) 1, 7, 11, 31, 77, 217, 341 and 2387
Ans: b) 7, 11, 31
3) 2387 is the composite number because
a) It has factors 1, 7, 11, 31, 77, 217, 341 and 2387
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