Is 1851 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 1851 is composite or not first we have to find its factors.
Contents
Factors of 1851:
- If we have taken numbers from 1, 2, 3…for checking factors of 1851, we found that 1851 has factors 1, 3, 617 and 1851. Hence, we must say that 1851 is a composite number.
- Thus, 1851 is the composite number.
- If we multiply 1851 by 1, 2, 3 then we get the multiples of 1851 which are 1851, 3702 and so on.
1851 is a Composite number or Prime number
About the number 1851:
- 1851 has more than two factors which are 1, 3, 617 and 1851 and hence it is the composite number.
- 1851 is the odd composite number and it is not the perfect square also.
- If we divide 1851 by 1, 3, 617 and 1851 then we get remainder as zero. Hence, 1, 3, 617 and 1851 are the factors of 1851
Note:
- 1851 is not the perfect square.
- Factors of 1851: 1, 3, 617 and 1851
- Prime factors of 1851: 3, 617
Conclusion:
- 1851 is the composite number which has factors 1, 3, 617 and 1851.
- And hence, 1851 is not the prime number.
Multiple Choice Questions:
1) 1851 is a
a) Even number
b) Prime number
c) Composite number
d) Both a and c
Ans: c) composite number
2) The non-prime factors of a composite number 1851 are
a) 1
b) 3, 617
c) 1 and 1851
d) 1, 3, 617 and 1851
Ans: b) 1 and 1851
3) 1851 is the odd composite number because
a) It has factors 1, 3, 617 and 1851
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all