Is 1819 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 1819 is composite or not first we have to find its factors.
Contents
Factors of 1819:
- If we have taken numbers from 1, 2, 3…for checking factors of 1819, we found that 1819 has factors 1, 17, 107 and 1819. Hence, we must say that 1819 is a composite number.
- Thus, 1819 is the composite number.
- If we multiply 1819 by 1, 2, 3 then we get the multiples of 1819 which are 1819, 3638 and so on.
1819 is a Composite number or Prime number
About the number 1819:
- 1819 has more than two factors which are 1, 17, 107 and 1819 and hence it is the composite number.
- 1819 is the odd composite number and it is not the perfect square also.
- If we divide 1819 by 1, 17, 107 and 1819 then we get remainder as zero. Hence, 1, 17, 107 and 1819 are the factors of 1819
Note:
- 1819 is not the perfect square.
- Factors of 1819: 1, 17, 107 and 1819
- Prime factors of 1819: 17, 107
Conclusion:
- 1819 is the composite number which has factors 1, 17, 107 and 1819.
- And hence, 1819 is not the prime number.
Multiple Choice Questions:
1) 1819 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 1819 are
a) 1
b) 17, 107
c) 1 and 1819
d) 1, 17, 107 and 1819
Ans: b) 1 and 1819
3) 1819 is the odd composite number because
a) It has factors 1, 17, 107 and 1819
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all