Is 679 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 679 is composite or not first we have to find its factors.
Contents
Factors of 679:
- If we have taken numbers from 1, 2, 3…for checking factors of 679, we found that 679 has factors 1, 7, 97 and 679. Hence, we must say that 679 is a composite number.
- Thus, 679 is the composite number.
- If we multiply 679 by 1, 2, 3 then we get the multiples of 679 which are 679, 1358 and so on.
679 is a Composite number or Prime number
About the number 679:
- 679 has more than two factors which are 1, 7, 97 and 679 and hence it is the composite number.
- 679 is the odd composite number and it is not the perfect square also.
- If we divide 679 by 1, 7, 97 and 679 then we get remainder as zero. Hence, 1, 7, 97 and 679 are the factors of 679.
Note:
- 679 is not the perfect square.
- Factors of 679: 1, 7, 97 and 679
- Prime factors of 679: 7, 97
Conclusion:
- 679 is the composite number which has factors 1, 7, 97 and 679.
- And hence, 679 is not the prime number.
Multiple Choice Questions:
1) 679 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 679 are
a) 1
b) 7, 97
c) 1 and 679
d) 1, 7, 97 and 679
Ans: b) 7, 97
3) 679 is the odd composite number because
a) It has factors 1, 7, 97 and 679
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c