Is 1745 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 1745 is composite or not first we have to find its factors.
Contents
Factors of 1745:
- If we have taken numbers from 1, 2, 3…for checking factors of 1745, we found that 1745 has factors 1, 5, 349 and 1745. Hence, we must say that 1745 is a composite number.
- Thus, 1745 is the composite number.
- If we multiply 1745 by 1, 2, 3 then we get the multiples of 1745 which are 1745, 3490 and so on.
1745 is a Composite number or Prime number
About the number 1745:
- 1745 has more than two factors which are 1, 5, 349 and 1745 and hence it is the composite number.
- 1745 is the odd composite number and it is not the perfect square also.
- If we divide 1745 by 1, 5, 349 and 1745 then we get remainder as zero. Hence, 1, 5, 349 and 1745 are the factors of 1745
Note:
- 1745 is not the perfect square.
- Factors of 1745: 1, 5, 349 and 1745
- Prime factors of 1745: 5, 349
Conclusion:
- 1745 is the composite number which has factors 1, 5, 349 and 1745.
- And hence, 1745 is not the prime number.
Multiple Choice Questions:
1) 1745 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 1745 are
a) 1
b) 5, 349
c) 1 and 1745
d) 1, 5, 349 and 1745
Ans: b) 1 and 1745
3) 1745 is the odd composite number because
a) It has factors 1, 5, 349 and 1745
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all