Is 578 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 578 is composite or not first we have to find its factors.
Contents
Factors of 578:
- If we have taken numbers from 1, 2, 3…for checking factors of 578, we found that 578 has factors 1, 2, 17, 34, 289 and 578. Hence, we must say that 578 is a composite number.
- Thus, 578 is the composite umber.
- If we multiply 578 by 1, 2, 3 then we get the multiples of 578 which are 578, 1156 and so on.
About the number 578:
- 578 has more than two factors which are 1, 2, 17, 34, 289 and 578 and hence it is the composite number.
- 578 is the even composite number and it is not the perfect square also.
- If we divide 578 by 1, 2, 17, 34, 289 and 578 then we get remainder as zero. Hence, 1, 2, 17, 34, 289 and 578 are the factors of 578.
Note:
- 578 is not the perfect square.
- Factors of 578: 1, 2, 17, 34, 289 and 578
- Prime factors of 578: 2, 17
Conclusion:
- 578 is the composite number which has factors 1, 2, 17, 34, 289 and 578
- And hence, 578 is not the prime number.
Multiple Choice Questions:
1) 578 is a
a) Prime number
b) odd number
c) Composite number
d) Both b and c
Ans: c) composite number
2) The non-prime factors of a composite number 578 are
a) 1
b) 2, 17
c) 1, 34, 289 and 578
d) 1, 2, 17, 34, 289 and 578
Ans: c) 1, 34, 289 and 578
3) 578 is the composite number because
a) It has two factors
b) More than two factors
c) Divisible by 2
d) Both b and c
Ans: b) more than two factors