Is 657 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 657 is composite or not first we have to find its factors.
Contents
Factors of 657:
- If we have taken numbers from 1, 2, 3…for checking factors of 657, we found that 657 has factors 1, 3, 9, 73, 219 and 657. Hence, we must say that 657 is a composite number.
- Thus, 657 is the composite number.
- If we multiply 657 by 1, 2, 3 then we get the multiples of 657 which are 657, 1314 and so on.
657 is a Composite number or Prime number
About the number 657:
- 657 has more than two factors which are 1, 3, 9, 73, 219 and 657 and hence it is the composite number.
- 657 is the odd composite number and it is not the perfect square also.
- If we divide 657 by 1, 3, 9, 73, 219 and 657 then we get remainder as zero. Hence, 1, 3, 9, 73, 219 and 657 are the factors of 657.
Note:
- 657 is not the perfect square.
- Factors of 657: 1, 3, 9, 73, 219 and 657
- Prime factors of 657: 3, 73
Conclusion:
- 657 is the composite number which has factors 1, 3, 9, 73, 219 and 657.
- And hence, 657 is not the prime number.
Multiple Choice Questions:
1) 657 is a
a) odd number
b) Prime number
c) Composite number
d) Both a and c
Ans: d) both a and c
2) The prime factors of a composite number 657 are
a) 1
b) 3, 73
c) 1, 9, 219 and 657
d) 1, 3, 9, 73, 219 and 657
Ans: b) 3, 73
3) 657 is the odd composite number because
a) It has factors 1, 3, 9, 73, 219 and 657
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c