Is 1899 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 1899 is composite or not first we have to find its factors.
Contents
Factors of 1899:
- If we have taken numbers from 1, 2, 3…for checking factors of 1899, we found that 1899 has factors 1, 3, 9, 211, 633 and 1899. Hence, we must say that 1899 is a composite number.
- Thus, 1899 is the composite number.
- If we multiply 1899 by 1, 2, 3 then we get the multiples of 1899 which are 1899, 3798 and so on.
1899 is a Composite number or Prime number
About the number 1899:
- 1899 has more than two factors which are 1, 3, 9, 211, 633 and 1899 and hence it is the composite number.
- 1899 is the odd composite number and it is not the perfect square also.
- If we divide 1899 by 1, 3, 9, 211, 633 and 1899 then we get remainder as zero. Hence, 1, 3, 9, 211, 633 and 1899 are the factors of 1899
Note:
- 1899 is not the perfect square.
- Factors of 1899: 1, 3, 9, 211, 633 and 1899
- Prime factors of 1899: 3, 211
Conclusion:
- 1899 is the composite number which has factors 1, 3, 9, 211, 633 and 1899.
- And hence, 1899 is not the prime number.
Multiple Choice Questions:
1) 1899 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 1899 are
a) 1
b) 3, 211
c) 1, 9, 633 and 1899
d) 1, 3, 9, 211, 633 and 1899
Ans: b) 1, 9, 633 and 1899
3) 1899 is the odd composite number because
a) It has factors 1, 3, 9, 211, 633 and 1899
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all