Is 2169 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 2169 is composite or not first we have to find its factors.
Contents
Factors of 2169:
- If we have taken numbers from 1, 2, 3…for checking factors of 2169, we found that 2169 has factors 1, 3, 9, 241, 723 and 2169. Hence, we must say that 2169 is a composite number.
- Thus, 2169 is the composite number.
- If we multiply 2169 by 1, 2, 3 then we get the multiples of 2169 which are 2169, 4338 and so on.
2169 is a Composite number or Prime number
About the number 2169:
- 2169 has more than two factors which are 1, 3, 9, 241, 723 and 2169 and hence it is the composite number.
- 2169 is the odd composite number and it is not the perfect square also.
- If we divide 2169 by 1, 3, 9, 241, 723 and 2169 then we get remainder as zero. Hence, 1, 3, 9, 241, 723 and 2169 are the factors of 2169
Note:
- 2169 is not the perfect square.
- Factors of 2169: 1, 3, 9, 241, 723 and 2169
- Prime factors of 2169: 3, 241
Conclusion:
- 2169 is the composite number which has factors 1, 3, 9, 241, 723 and 2169.
- And hence, 2169 is not the prime number.
Multiple Choice Questions:
1) 2169 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 2169 are
a) 1
b) 3, 241
c) 1 and 2169
d) 1, 3, 9, 241, 723 and 2169
Ans: b) 3, 241
3) 2169 is the composite number because
a) It has factors 1, 3, 9, 241, 723 and 2169
b) It has more than two factors
c) It is not divisible by 2
d) Both a and b
Ans: d) both a and b