Is 3123 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 3123 is composite or not first we have to find its factors.
Contents
Factors of 3123:
- If we have taken numbers from 1, 2, 3…for checking factors of 3123, we found that 3123 has factors 1, 3, 9, 347, 1041 and 3123. Hence, we must say that 3123 is a composite number.
- Thus, 3123 is the composite number.
- If we multiply 3123 by 1, 2, 3 then we get the multiples of 3123 which are 3123, 6246 and so on.
3123 is a Composite number or Prime number
About the number 3123:
- 3123 has more than two factors which are 1, 3, 9, 347, 1041 and 3123 and hence it is the composite number.
- 3123 is the odd composite number and it is not the perfect square also.
- If we divide 3123 by 1, 3, 9, 347, 1041 and 3123 then we get remainder as zero. Hence 1, 3, 9, 347, 1041 and 3123 are the factors of 3123
Note:
- 3123 is not the perfect square.
- Factors of 3123: 1, 3, 9, 347, 1041 and 3123
- Prime factors of 3123: 3, 347
Conclusion:
- 3123 is the composite number which has factors 1, 3, 9, 347, 1041 and 3123.
- And hence, 3123 is not the prime number.
Multiple Choice Questions:
1) 3123 is a
a) odd number
b) Prime number
c) even number
d) Both a and c
Ans: a) odd number
2) The non-prime factors of a composite number 3123 are
a) 1
b) 3, 347
c) 1, 3, 9, 347, 1041 and 3123
d) 1, 9, 1041 and 3123
Ans: d) 1, 9, 1041 and 3123
3) 3123 is the odd composite number because
a) It has factors 1, 3, 9, 347, 1041 and 3123
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all
Why the below numbers are composite numbers
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