Is 2055 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 2055 is composite or not first we have to find its factors.
Contents
Factors of 2055:
- If we have taken numbers from 1, 2, 3…for checking factors of 2055, we found that 2055 has factors 1, 3, 5, 15, 137, 411, 685 and 2055. Hence, we must say that 2055 is a composite number.
- Thus, 2055 is the composite number.
- If we multiply 2055 by 1, 2, 3 then we get the multiples of 2055 which are 2055, 4110 and so on.
2055 is a Composite number or Prime number
About the number 2055:
- 2055 has more than two factors which are 1, 3, 5, 15, 137, 411, 685 and 2055 and hence it is the composite number.
- 2055 is the odd composite number and it is not the perfect square also.
- If we divide 2055 by 1, 3, 5, 15, 137, 411, 685 and 2055 then we get remainder as zero. Hence, 1, 3, 5, 15, 137, 411, 685 and 2055 are the factors of 2055
Note:
- 2055 is not the perfect square.
- Factors of 2055: 1, 3, 5, 15, 137, 411, 685 and 2055
- Prime factors of 2055: 3, 5, 137
Conclusion:
- 2055 is the composite number which has factors 1, 3, 5, 15, 137, 411, 685 and 2055.
- And hence, 2055 is not the prime number.
Multiple Choice Questions:
1) 2055 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 2055 are
a) 1
b) 3, 5, 137
c) 1, 15, 411, 685 and 2055
d) 1, 3, 5, 15, 137, 411, 685 and 2055
Ans: b) 3, 5, 137
3) 2055 is the composite number because
a) It has factors 1, 3, 5, 15, 137, 411, 685 and 2055
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