Is 2018 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 2018 is composite or not first we have to find its factors.
Contents
Factors of 2018:
- If we have taken numbers from 1, 2, 3…for checking factors of 2018, we found that 2018 has factors 1, 2, 1009 and 2018. Hence, we must say that 2018 is a composite number.
- Thus, 2018 is the composite number.
- If we multiply 2018 by 1, 2, 3 then we get the multiples of 2018 which are 2018, 4036 and so on.
About the number 2018:
- 2018 has more than two factors which are 1, 2, 1009 and 2018 and hence it is the composite number.
- 2018 is the even composite number and it is not the perfect square also.
- If we divide 2018 by, 1, 2, 1009 and 2018 then we get remainder as zero. Hence, 1, 2, 1009 and 2018 are the factors of 2018.
Note:
- 2018 is not the perfect square.
- Factors of 2018: 1, 2, 1009 and 2018
- Prime factors of 2018: 2, 1009
Conclusion:
- 2018 is the composite number which has factors 1, 2, 1009 and 2018
- And hence, 2018 is not the prime number.
Multiple Choice Questions:
1) 2018 is a
a) Prime number
b) Odd number
c) Composite number
d) Both a and c
Ans: c) composite number
2) The non-prime factors of a composite number 2018 are
a) 2018
b) 2, 1009
c) 1 and 2018
d) 1, 2, 1009 and 2018
Ans: c) 1 and 2018
3) 2018 is composite number because
a) It has factors 1, 2, 1009 and 2018
b) It has only two factors
c) Divisible by 2
d) Both a and c
Ans: a) it has factors 1, 2, 1009 and 2018