Is 2187 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 2187 is composite or not first we have to find its factors.
Contents
Factors of 2187:
- If we have taken numbers from 1, 2, 3…for checking factors of 2187, we found that 2187 has factors 1, 3, 9, 27, 81, 243, 729 and 2187. Hence, we must say that 2187 is a composite number.
- Thus, 2187 is the composite number.
- If we multiply 2187 by 1, 2, 3 then we get the multiples of 2187 which are 2187, 4374 and so on.
2187 is a Composite number or Prime number
About the number 2187:
- 2187 has more than two factors which are 1, 3, 9, 27, 81, 243, 729 and 2187 and hence it is the composite number.
- 2187 is the odd composite number and it is not the perfect square also.
- If we divide 2187 by 1, 3, 9, 27, 81, 243, 729 and 2187 then we get remainder as zero. Hence, 1, 3, 9, 27, 81, 243, 729 and 2187 are the factors of 2187
Note:
- 2187 is not the perfect square.
- Factors of 2187: 1, 3, 9, 27, 81, 243, 729 and 2187
- Prime factors of 2187: 3
Conclusion:
- 2187 is the composite number which has factors 1, 3, 9, 27, 81, 243, 729 and 2187.
- And hence, 2187 is not the prime number.
Multiple Choice Questions:
1) 2187 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 2187 are
a) 1
b) 3
c) 1 and 2187
d) 1, 3, 9, 27, 81, 243, 729 and 2187
Ans: b) 3
3) 2187 is the composite number because
a) It has factors 1, 3, 9, 27, 81, 243, 729 and 2187
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