Is 2091 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 2091 is composite or not first we have to find its factors.
Contents
Factors of 2091:
- If we have taken numbers from 1, 2, 3…for checking factors of 2091, we found that 2091 has factors 1, 3, 17, 41, 51, 123, 697 and 2091. Hence, we must say that 2091 is a composite number.
- Thus, 2091 is the composite number.
- If we multiply 2091 by 1, 2, 3 then we get the multiples of 2091 which are 2091, 4182 and so on.
2091 is a Composite number or Prime number
About the number 2091:
- 2091 has more than two factors which are 1, 3, 17, 41, 51, 123, 697 and 2091 and hence it is the composite number.
- 2091 is the odd composite number and it is not the perfect square also.
- If we divide 2091 by 1, 3, 17, 41, 51, 123, 697 and 2091 then we get remainder as zero. Hence, 1, 3, 17, 41, 51, 123, 697 and 2091 are the factors of 2091
Note:
- 2091 is not the perfect square.
- Factors of 2091: 1, 3, 17, 41, 51, 123, 697 and 2091
- Prime factors of 2091: 3, 17, 41
Conclusion:
- 2091 is the composite number which has factors 1, 3, 17, 41, 51, 123, 697 and 2091.
- And hence, 2091 is not the prime number.
Multiple Choice Questions:
1) 2091 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 2091 are
a) 1
b) 3, 17, 41
c) 1, 51, 123, 697 and 2091
d) 1, 3, 17, 41, 51, 123, 697 and 2091
Ans: b) 3, 17, 41
3) 2091 is the composite number because
a) It has factors 1, 3, 17, 41, 51, 123, 697 and 2091
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