Is 1887 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 1887 is composite or not first we have to find its factors.
Contents
Factors of 1887:
- If we have taken numbers from 1, 2, 3…for checking factors of 1887, we found that 1887 has factors 1, 3, 17, 37, 51, 111, 629 and 1887. Hence, we must say that 1887 is a composite number.
- Thus, 1887 is the composite number.
- If we multiply 1887 by 1, 2, 3 then we get the multiples of 1887 which are 1887, 3774 and so on.
1887 is a Composite number or Prime number
About the number 1887:
- 1887 has more than two factors which are 1, 3, 17, 37, 51, 111, 629 and 1887 and hence it is the composite number.
- 1887 is the odd composite number and it is not the perfect square also.
- If we divide 1887 by 1, 3, 17, 37, 51, 111, 629 and 1887 then we get remainder as zero. Hence, 1, 3, 17, 37, 51, 111, 629 and 1887 are the factors of 1887
Note:
- 1887 is not the perfect square.
- Factors of 1887: 1, 3, 17, 37, 51, 111, 629 and 1887
- Prime factors of 1887: 3, 17, 37
Conclusion:
- 1887 is the composite number which has factors 1, 3, 17, 37, 51, 111, 629 and 1887.
- And hence, 1887 is not the prime number.
Multiple Choice Questions:
1) 1887 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 1887 are
a) 1
b) 3, 17, 37
c) 1, 51, 111, 629 and 1887
d) 1, 3, 17, 37, 51, 111, 629 and 1887
Ans: b) 1, 51, 111, 629 and 1887
3) 1887 is the odd composite number because
a) It has factors 1, 3, 17, 37, 51, 111, 629 and 1887
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all