Is 3871 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 3871 is composite or not first we have to find its factors.
Contents
Factors of 3871:
- If we have taken numbers from 1, 2, 3…for checking factors of 3871, we found that 3871 has factors 1, 7, 49, 79, 553 and 3871. Hence, we must say that 3871 is a composite number.
- Thus, 3871 is the composite number.
- If we multiply 3871 by 1, 2, 3 then we get the multiples of 3871 which are 3871, 7742 and so on.
3871 is a Composite number or Prime number
About the number 3871:
- 3871 has more than two factors which are 1, 7, 49, 79, 553 and 3871 and hence it is the composite number.
- 3871 is the odd composite number and it is not the perfect square also.
- If we divide 3871 by 1, 7, 49, 79, 553 and 3871 then we get remainder as zero. Hence 1, 7, 49, 79, 553 and 3871 are the factors of 3871
Note:
- 3871 is not the perfect square.
- Factors of 3871:1, 7, 49, 79, 553 and 3871
- Prime factors of 3871: 7, 79
Conclusion:
- 3871 is the composite number which has factors 1, 7, 49, 79, 553 and 3871.
- And hence, 3871 is not the prime number.
Multiple Choice Questions:
1) 3871 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 3871 are
a) 1
b) 7, 79
c) 1, 7, 49, 79, 553 and 3871
d) 1, 49, 553 and 3871
Ans: d) 1, 49, 553 and 3871
3) 3871 is the odd composite number because
a) It has factors 1, 7, 49, 79, 553 and 3871
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all
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