Is 1915 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 1915 is composite or not first we have to find its factors.
Contents
Factors of 1915:
- If we have taken numbers from 1, 2, 3…for checking factors of 1915, we found that 1915 has factors 1, 5, 383 and 1915. Hence, we must say that 1915 is a composite number.
- Thus, 1915 is the composite number.
- If we multiply 1915 by 1, 2, 3 then we get the multiples of 1915 which are 1915, 3830 and so on.
1915 is a Composite number or Prime number
About the number 1915:
- 1915 has more than two factors which are 1, 5, 383 and 1915 and hence it is the composite number.
- 1915 is the odd composite number and it is not the perfect square also.
- If we divide 1915 by 1, 5, 383 and 1915 then we get remainder as zero. Hence, 1, 5, 383 and 1915 are the factors of 1915
Note:
- 1915 is not the perfect square.
- Factors of 1915: 1, 5, 383 and 1915
- Prime factors of 1915: 5, 383
Conclusion:
- 1915 is the composite number which has factors 1, 5, 383 and 1915.
- And hence, 1915 is not the prime number.
Multiple Choice Questions:
1) 1915 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 1915 are
a) 1
b) 5, 383
c) 1 and 1915
d) 1, 5, 383 and 1915
Ans: b) 1 and 1915
3) 1915 is the odd composite number because
a) It has factors 1, 5, 383 and 1915
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all