Is 2811 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 2811 is composite or not first we have to find its factors.
Contents
Factors of 2811:
- If we have taken numbers from 1, 2, 3…for checking factors of 2811, we found that 2811 has factors 1, 3, 937 and 2811. Hence, we must say that 2811 is a composite number.
- Thus, 2811 is the composite number.
- If we multiply 2811 by 1, 2, 3 then we get the multiples of 2811 which are 2811, 5622 and so on.
2811 is a Composite number or Prime number
About the number 2811:
- 2811 has more than two factors which are 1, 3, 937 and 2811 and hence it is the composite number.
- 2811 is the odd composite number and it is not the perfect square also.
- If we divide 2811 by 1, 3, 937 and 2811 then we get remainder as zero. Hence 1, 3, 937 and 2811 are the factors of 2811
Note:
- 2811 is not the perfect square.
- Factors of 2811: 1, 3, 937 and 2811
- Prime factors of 2811: 3, 937
Conclusion:
- 2811 is the composite number which has factors 1, 3, 937 and 2811.
- And hence, 2811 is not the prime number.
Multiple Choice Questions:
1) 2811 is a
a) odd number
b) Prime number
c) even number
d) Both a and c
Ans: a) odd number
2) The non-prime factors of a composite number 2811 are
a) 1
b) 3, 937
c) 1, 3, 937 and 2811
d) 1 and 2811
Ans: d) 1 and 2811
3) 2811 is the odd composite number because
a) It has factors 1, 3, 937 and 2811
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all