Is 3157 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 3157 is composite or not first we have to find its factors.
Contents
Factors of 3157:
- If we have taken numbers from 1, 2, 3…for checking factors of 3157, we found that 3157 has factors 1, 7, 11, 41, 77, 287, 451 and 3157. Hence, we must say that 3157 is a composite number.
- Thus, 3157 is the composite number.
- If we multiply 3157 by 1, 2, 3 then we get the multiples of 3157 which are 3157, 6314 and so on.
3157 is a Composite number or Prime number
About the number 3157:
- 3157 has more than two factors which are 1, 7, 11, 41, 77, 287, 451 and 3157 and hence it is the composite number.
- 3157 is the odd composite number and it is not the perfect square also.
- If we divide 3157 by 1, 7, 11, 41, 77, 287, 451 and 3157 then we get remainder as zero. Hence 1, 7, 11, 41, 77, 287, 451 and 3157 are the factors of 3157
Note:
- 3157 is not the perfect square.
- Factors of 3157: 1, 7, 11, 41, 77, 287, 451 and 3157
- Prime factors of 3157: 7, 11, 41
Conclusion:
- 3157 is the composite number which has factors 1, 7, 11, 41, 77, 287, 451 and 3157.
- And hence, 3157 is not the prime number.
Multiple Choice Questions:
1) 3157 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 3157 are
a) 1
b) 7, 11, 41
c) 1, 7, 11, 41, 77, 287, 451 and 3157
d) 1, 77, 287, 451 and 3157
Ans: d) 1, 77, 287, 451 and 3157
3) 3157 is the odd composite number because
a) It has factors 1, 7, 11, 41, 77, 287, 451 and 3157
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all
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