Is 693 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 693 is composite or not first we have to find its factors.
Contents
Factors of 693:
- If we have taken numbers from 1, 2, 3…for checking factors of 693, we found that 693 has factors 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231 and 693. Hence, we must say that 693 is a composite number.
- Thus, 693 is the composite number.
- If we multiply 693 by 1, 2, 3 then we get the multiples of 693 which are 693, 1386 and so on.
693 is a Composite number or Prime number
About the number 693:
- 693 has more than two factors which are 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231 and 693 and hence it is the composite number.
- 693 is the odd composite number and it is not the perfect square also.
- If we divide 693 by 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231 and 693 then we get remainder as zero. Hence, 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231 and 693 are the factors of 693.
Note:
- 693 is not the perfect square.
- Factors of 693: 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231 and 693
- Prime factors of 693: 3, 7, 11
Conclusion:
- 693 is the composite number which has factors 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231 and 693.
- And hence, 693 is not the prime number.
Multiple Choice Questions:
1) 693 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 693 are
a) 1
b) 3, 7, 11
c) 1, 9, 21, 33, 63, 77, 99, 231 and 693
d) 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231 and 693
Ans: b) 3, 7, 11
3) 693 is the odd composite number because
a) It has factors 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231 and 693
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c