Is 2019 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 2019 is composite or not first we have to find its factors.
Contents
Factors of 2019:
- If we have taken numbers from 1, 2, 3…for checking factors of 2019, we found that 2019 has factors 1, 3, 673 and 2019. Hence, we must say that 2019 is a composite number.
- Thus, 2019 is the composite number.
- If we multiply 2019 by 1, 2, 3 then we get the multiples of 2019 which are 2019, 4038 and so on.
2019 is a Composite number or Prime number
About the number 2019:
- 2019 has more than two factors which are 1, 3, 673 and 2019 and hence it is the composite number.
- 2019 is the odd composite number and it is not the perfect square also.
- If we divide 2019 by 1, 3, 673 and 2019 then we get remainder as zero. Hence, 1, 3, 673 and 2019 are the factors of 2019
Note:
- 2019 is not the perfect square.
- Factors of 2019: 1, 3, 673 and 2019
- Prime factors of 2019: 3, 673
Conclusion:
- 2019 is the composite number which has factors 1, 3, 673 and 2019.
- And hence, 2019 is not the prime number.
Multiple Choice Questions:
1) 2019 is a
a) Even number
b) Prime number
c) Composite number
d) Both a and c
Ans: c) composite number
2) The non-prime factors of a composite number 2019 are
a) 1
b) 3, 673
c) 1 and 2019
d) 1, 3, 673 and 2019
Ans: c) 1 and 2019
3) 2019 is the odd composite number because
a) It has factors 1, 3, 673 and 2019
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all