Is 1790 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 1790 is composite or not first we have to find its factors.
Contents
Factors of 1790:
- If we have taken numbers from 1, 2, 3…for checking factors of 1790, we found that 1790 has factors 1, 2, 5, 10, 179, 358, 895 and 1790. Hence, we must say that 1790 is a composite number.
- Thus, 1790 is the composite number.
- If we multiply 1790 by 1, 2, 3 then we get the multiples of 1790 which are 1790, 3580 and so on.
About the number 1790:
- 1790 has more than two factors which are 1, 2, 5, 10, 179, 358, 895 and 1790 and hence it is the composite number.
- 1790 is the even composite number and it is not the perfect square also.
- If we divide 1790 by, 1, 2, 5, 10, 179, 358, 895 and 1790 then we get remainder as zero. Hence, 1, 2, 5, 10, 179, 358, 895 and 1790 are the factors of 1790.
Note:
- 1790 is not the perfect square.
- Factors of 1790: 1, 2, 5, 10, 179, 358, 895 and 1790
- Prime factors of 1790: 2, 5, 179
Conclusion:
- 1790 is the composite number which has factors 1, 2, 5, 10, 179, 358, 895 and 1790
- And hence, 1790 is not the prime number.
Multiple Choice Questions:
1) 1790 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 1790 are
a) 1790
b) 2, 5, 179
c) 1, 10, 358, 895 and 1790
d) 1, 2, 5, 10, 179, 358, 895 and 1790
Ans: c) 1, 10, 358, 895 and 1790
3) 1790 is composite number because
a) It has factors 1, 2, 5, 10, 179, 358, 895 and 1790
b) It has only two factors
c) Divisible by 2
d) Both a and c
Ans: a) it has factors 1, 2, 5, 10, 179, 358, 895 and 1790