Is 1858 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 1858 is composite or not first we have to find its factors.
Contents
Factors of 1858:
- If we have taken numbers from 1, 2, 3…for checking factors of 1858, we found that 1858 has factors 1, 2, 929 and 1858. Hence, we must say that 1858 is a composite number.
- Thus, 1858 is the composite number.
- If we multiply 1858 by 1, 2, 3 then we get the multiples of 1858 which are 1858, 3716 and so on.
About the number 1858:
- 1858 has more than two factors which are 1, 2, 929 and 1858 and hence it is the composite number.
- 1858 is the even composite number and it is not the perfect square also.
- If we divide 1858 by, 1, 2, 929 and 1858 then we get remainder as zero. Hence, 1, 2, 929 and 1858 are the factors of 1858.
Note:
- 1858 is not the perfect square.
- Factors of 1858: 1, 2, 929 and 1858
- Prime factors of 1858: 2, 929
Conclusion:
- 1858 is the composite number which has factors 1, 2, 929 and 1858
- And hence, 1858 is not the prime number.
Multiple Choice Questions:
1) 1858 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 1858 are
a) 1858
b) 2, 929
c) 1 and 1858
d) 1, 2, 929 and 1858
Ans: c) 1 and 1858
3) 1858 is composite number because
a) It has factors 1, 2, 929 and 1858
b) It has only two factors
c) Divisible by 2
d) Both a and c
Ans: a) it has factors 1, 2, 929 and 1858