Is 655 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 655 is composite or not first we have to find its factors.
Contents
Factors of 655:
- If we have taken numbers from 1, 2, 3…for checking factors of 655, we found that 655 has factors 1, 5, 131 and 655. Hence, we must say that 655 is a composite number.
- Thus, 655 is the composite number.
- If we multiply 655 by 1, 2, 3 then we get the multiples of 655 which are 655, 1310 and so on.
655 is a Composite number or Prime number
About the number 655:
- 655 has more than two factors which are 1, 5, 131 and 655 and hence it is the composite number.
- 655 is the odd composite number and it is not the perfect square also.
- If we divide 655 by 1, 5, 131 and 655 then we get remainder as zero. Hence, 1, 5, 131 and 655 are the factors of 655.
Note:
- 655 is not the perfect square.
- Factors of 655: 1, 5, 131 and 655
- Prime factors of 655: 5, 131
Conclusion:
- 655 is the composite number which has factors 1, 5, 131 and 655.
- And hence, 655 is not the prime number.
Multiple Choice Questions:
3) 655 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 655 are
a) 1
b) 5, 131
c) 1 and 655
d) 1, 5, 131 and 655
Ans: b) 5, 131
3) 655 is the odd composite number because
a) It has factors 1, 5, 131 and 655
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c