Is 209 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 209 is composite or not first we have to find its factors.
Contents
Factors of 209:
- If we have taken numbers from 1, 2, 3…for checking factors of 209, we found that 209 has factors 1, 11, 19 and 209. Hence, we must say that 209 is a composite number.
- Thus, 209 is the composite number.
- If we multiply 209 by 1, 2, 3 then we get the multiples of 209 which are 209, 418, and so on.
About the number 209:
- 209 has more than two factors which are 1, 11, 19 and 209 and hence it is the composite number.
- 209 is the odd composite number and it is not the perfect square also.
- If we divide 209 by 1, 11, 19 and 209 then we get remainder as zero. Hence, 1, 11, 19 and 209 are the factors of 209.
Note:
- 209 is not the perfect square.
- Factors of 209: 1, 11, 19 and 209
- Prime factors of 209: 11, 19
Conclusion:
- 209 is the composite number which has factors 1, 11, 19 and 209.
- And hence, 209 is not the prime number.
Multiple Choice Questions:
1) 209 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 209 are
a) 1
b) 11, 19
c) Both a and b
d) 2091
Ans: b) 11, 19
3) 1 is the not prime factor of 209 because
a) It is the prime number
b) 1 is neither prime nor composite number
c) Both a and b
d) Given statement is false
Ans: b) 1 is neither prime nor composite number