Is 1649 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 1649 is composite or not first we have to find its factors.
Contents
Factors of 1649:
- If we have taken numbers from 1, 2, 3…for checking factors of 1649, we found that 1649 has factors 1, 17, 97 and 1649. Hence, we must say that 1649 is a composite number.
- Thus, 1649 is the composite number.
- If we multiply 1649 by 1, 2, 3 then we get the multiples of 1649 which are 1649, 3298 and so on.
1649 is a Composite number or Prime number
About the number 1649:
- 1649 has more than two factors which are 1, 17, 97 and 1649 and hence it is the composite number.
- 1649 is the odd composite number and it is not the perfect square also.
- If we divide 1649 by 1, 17, 97 and 1649 then we get remainder as zero. Hence, 1, 17, 97 and 1649 are the factors of 1649
Note:
- 1649 is not the perfect square.
- Factors of 1649: 1, 17, 97 and 1649
- Prime factors of 1649: 17, 97
Conclusion:
- 1649 is the composite number which has factors 1, 17, 97 and 1649.
- And hence, 1649 is not the prime number.
Multiple Choice Questions:
1) 1649 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 1649 are
a) 1
b) 17, 97
c) 1 and 1649
d) 1, 17, 97 and 1649
Ans: b) 1 and 1649
3) 1649 is the odd composite number because
a) It has factors 1, 17, 97 and 1649
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all