Is 654 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 654 is composite or not first we have to find its factors.
Contents
Factors of 654:
- If we have taken numbers from 1, 2, 3…for checking factors of 654, we found that 654 has factors 1, 2, 3, 6, 109, 218, 327 and 654. Hence, we must say that 654 is a composite number.
- Thus, 654 is the composite umber.
- If we multiply 654 by 1, 2, 3 then we get the multiples of 654 which are 654, 1308 and so on.
About the number 654:
- 654 has more than two factors which are 1, 2, 3, 6, 109, 218, 327 and 654 and hence it is the composite number.
- 654 is the even composite number and it is not the perfect square also.
- If we divide 654 by 1, 2, 3, 6, 109, 218, 327 and 654 then we get remainder as zero. Hence, 1, 2, 3, 6, 109, 218, 327 and 654 are the factors of 654.
Note:
- 654 is not the perfect square.
- Factors of 654: 1, 2, 3, 6, 109, 218, 327 and 654
- Prime factors of 654: 2, 3, 109
Conclusion:
- 654 is the composite number which has factors 1, 2, 3, 6, 109, 218, 327 and 654
- And hence, 654 is not the prime number.
Multiple Choice Questions:
1) 654 is a
a) Not a perfect square number
b) Even number
c) Composite number
d) all
Ans: d) all
2) The prime and composite factors of a composite number 654 are
a) 1
b) 2, 3, 109
c) 1, 6, 218, 327 and 654
d) 1, 2, 3, 6, 109, 218, 327 and 654
Ans: d) 1, 2, 3, 6, 109, 218, 327 and 654
3) 654 is the even composite number because
a) It has factors 1, 2, 3, 6, 109, 218, 327 and 654
b) More than two factors
c) Divisible by 2
d) all
Ans: d) all