Is 1919 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 1919 is composite or not first we have to find its factors.
Contents
Factors of 1919:
- If we have taken numbers from 1, 2, 3…for checking factors of 1919, we found that 1919 has factors 1, 19, 101 and 1919. Hence, we must say that 1919 is a composite number.
- Thus, 1919 is the composite number.
- If we multiply 1919 by 1, 2, 3 then we get the multiples of 1919 which are 1919, 3838 and so on.
1919 is a Composite number or Prime number
About the number 1919:
- 1919 has more than two factors which are 1, 19, 101 and 1919 and hence it is the composite number.
- 1919 is the odd composite number and it is not the perfect square also.
- If we divide 1919 by 1, 19, 101 and 1919 then we get remainder as zero. Hence, 1, 19, 101 and 1919 are the factors of 1919
Note:
- 1919 is not the perfect square.
- Factors of 1919: 1, 19, 101 and 1919
- Prime factors of 1919: 19, 101
Conclusion:
- 1919 is the composite number which has factors 1, 19, 101 and 1919.
- And hence, 1919 is not the prime number.
Multiple Choice Questions:
1) 1919 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 1919 are
a) 1
b) 19, 101
c) 1 and 1919
d) 1, 19, 101 and 1919
Ans: b) 1 and 1919
3) 1919 is the odd composite number because
a) It has factors 1, 19, 101 and 1919
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all