Is 671 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 671 is composite or not first we have to find its factors.
Contents
Factors of 671:
- If we have taken numbers from 1, 2, 3…for checking factors of 671, we found that 671 has factors 1, 11, 61 and 671. Hence, we must say that 671 is a composite number.
- Thus, 671 is the composite number.
- If we multiply 671 by 1, 2, 3 then we get the multiples of 671 which are 671, 1342 and so on.
671 is a Composite number or Prime number
About the number 671:
- 671 has more than two factors which are 1, 11, 61 and 671 and hence it is the composite number.
- 671 is the odd composite number and it is not the perfect square also.
- If we divide 671 by 1, 11, 61 and 671 then we get remainder as zero. Hence, 1, 11, 61 and 671 are the factors of 671.
Note:
- 671 is not the perfect square.
- Factors of 671: 1, 11, 61 and 671
- Prime factors of 671: 11, 61
Conclusion:
- 671 is the composite number which has factors 1, 11, 61 and 671.
- And hence, 671 is not the prime number.
Multiple Choice Questions:
1) 671 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 671 are
a) 1
b) 11, 61
c) 1 and 671
d) 1, 11, 61 and 671
Ans: b) 11, 61
3) 671 is the odd composite number because
a) It has factors 1, 11, 61 and 671
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c