Is 1655 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 1655 is composite or not first we have to find its factors.
Contents
Factors of 1655:
- If we have taken numbers from 1, 2, 3…for checking factors of 1655, we found that 1655 has factors 1, 5, 331 and 1655. Hence, we must say that 1655 is a composite number.
- Thus, 1655 is the composite number.
- If we multiply 1655 by 1, 2, 3 then we get the multiples of 1655 which are 1655, 3310 and so on.
1655 is a Composite number or Prime number
About the number 1655:
- 1655 has more than two factors which are 1, 5, 331 and 1655 and hence it is the composite number.
- 1655 is the odd composite number and it is not the perfect square also.
- If we divide 1655 by 1, 5, 331 and 1655 then we get remainder as zero. Hence, 1, 5, 331 and 1655 are the factors of 1655
Note:
- 1655 is not the perfect square.
- Factors of 1655: 1, 5, 331 and 1655
- Prime factors of 1655: 5, 331
Conclusion:
- 1655 is the composite number which has factors 1, 5, 331 and 1655.
- And hence, 1655 is not the prime number.
Multiple Choice Questions:
1) 1655 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 1655 are
a) 1
b) 5, 331
c) 1 and 1655
d) 1, 5, 331 and 1655
Ans: b) 1 and 1655
3) 1655 is the odd composite number because
a) It has factors 1, 5, 331 and 1655
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all