Is 3999 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 3999 is composite or not first we have to find its factors.
Contents
Factors of 3999:
- If we have taken numbers from 1, 2, 3…for checking factors of 3999, we found that 3999 has factors 1, 3, 31, 43, 93, 129, 1333 and 3999. Hence, we must say that 3999 is a composite number.
- Thus, 3999 is the composite number.
- If we multiply 3999 by 1, 2, 3 then we get the multiples of 3999 which are 3999, 7998 and so on.
3999 is a Composite number or Prime number
About the number 3999:
- 3999 has more than two factors which are 1, 3, 31, 43, 93, 129, 1333 and 3999 and hence it is the composite number.
- 3999 is the odd composite number and it is not the perfect square also.
- If we divide 3999 by 1, 3, 31, 43, 93, 129, 1333 and 3999 then we get remainder as zero. Hence 1, 3, 31, 43, 93, 129, 1333 and 3999 are the factors of 3999
Note:
- 3999 is not the perfect square.
- Factors of 3999: 1, 3, 31, 43, 93, 129, 1333 and 3999
- Prime factors of 3999: 3, 31, 43
Conclusion:
- 3999 is the composite number which has factors 1, 3, 31, 43, 93, 129, 1333 and 3999.
- And hence, 3999 is not the prime number.
Multiple Choice Questions:
1) 3999 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 3999 are
a) 1
b) 3, 31, 43
c) 1, 3, 31, 43, 93, 129, 1333 and 3999
d) 1, 93, 129, 1333 and 3999
Ans: d) 1, 93, 129, 1333 and 3999
3) 3999 is the odd composite number because
a) It has factors 1, 3, 31, 43, 93, 129, 1333 and 3999
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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