Is 1715 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 1715 is composite or not first we have to find its factors.
Contents
Factors of 1715:
- If we have taken numbers from 1, 2, 3…for checking factors of 1715, we found that 1715 has factors 1, 5, 7, 35, 49, 245, 343 and 1715. Hence, we must say that 1715 is a composite number.
- Thus, 1715 is the composite number.
- If we multiply 1715 by 1, 2, 3 then we get the multiples of 1715 which are 1715, 3430 and so on.
1715 is a Composite number or Prime number
About the number 1715:
- 1715 has more than two factors which are 1, 5, 7, 35, 49, 245, 343 and 1715 and hence it is the composite number.
- 1715 is the odd composite number and it is not the perfect square also.
- If we divide 1715 by 1, 5, 7, 35, 49, 245, 343 and 1715 then we get remainder as zero. Hence, 1, 5, 7, 35, 49, 245, 343 and 1715 are the factors of 1715
Note:
- 1715 is not the perfect square.
- Factors of 1715: 1, 5, 7, 35, 49, 245, 343 and 1715
- Prime factors of 1715: 5, 7
Conclusion:
- 1715 is the composite number which has factors 1, 5, 7, 35, 49, 245, 343 and 1715.
- And hence, 1715 is not the prime number.
Multiple Choice Questions:
1) 1715 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 1715 are
a) 1
b) 5, 7
c) 1, 35, 49, 245, 343and 1715
d) 1, 5, 7, 35, 49, 245, 343 and 1715
Ans: b) 1, 35, 49, 245, 343 and 1715
3) 1715 is the odd composite number because
a) It has factors 1, 5, 7, 35, 49, 245, 343 and 1715
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all