Is 2643 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 2643 is composite or not first we have to find its factors.
Contents
Factors of 2643:
- If we have taken numbers from 1, 2, 3…for checking factors of 2643, we found that 2643 has factors 1, 3, 881 and 2643. Hence, we must say that 2643 is a composite number.
- Thus, 2643 is the composite number.
- If we multiply 2643 by 1, 2, 3 then we get the multiples of 2643 which are 2643, 5286 and so on.
2643 is a Composite number or Prime number
About the number 2643:
- 2643 has more than two factors which are 1, 3, 881 and 2643 and hence it is the composite number.
- 2643 is the odd composite number and it is not the perfect square also.
- If we divide 2643 by 1, 3, 881 and 2643 then we get remainder as zero. Hence 1, 3, 881 and 2643 are the factors of 2643
Note:
- 2643 is not the perfect square.
- Factors of 2643: 1, 3, 881 and 2643
- Prime factors of 2643: 3, 881
Conclusion:
- 2643 is the composite number which has factors 1, 3, 881 and 2643.
- And hence, 2643 is not the prime number.
Multiple Choice Questions:
1) 2643 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 2643 are
a) 1
b) 3, 881
c) 1 and 2643
d) 1, 3, 881 and 2643
Ans: b) 3, 881
3) 2643 is the composite number because
a) It has factors 1, 3, 881 and 2643
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