Is 1623 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 1623 is composite or not first we have to find its factors.
Contents
Factors of 1623:
- If we have taken numbers from 1, 2, 3…for checking factors of 1623, we found that 1623 has factors 1, 3, 541 and 1623. Hence, we must say that 1623 is a composite number.
- Thus, 1623 is the composite number.
- If we multiply 1623 by 1, 2, 3 then we get the multiples of 1623 which are 1623, 3246 and so on.
1623 is a Composite number or Prime number
About the number 1623:
- 1623 has more than two factors which are 1, 3, 541 and 1623 and hence it is the composite number.
- 1623 is the odd composite number and it is not the perfect square also.
- If we divide 1623 by 1, 3, 541 and 1623 then we get remainder as zero. Hence, 1, 3, 541 and 1623 are the factors of 1623
Note:
- 1623 is not the perfect square.
- Factors of 1623: 1, 3, 541 and 1623
- Prime factors of 1623: 3, 541
Conclusion:
- 1623 is the composite number which has factors 1, 3, 541 and 1623.
- And hence, 1623 is not the prime number.
Multiple Choice Questions:
1) 1623 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 1623 are
a) 1
b) 3, 541
c) 1 and 1623
d) 1, 3, 541 and 1623
Ans: b) 1 and 1623
3) 1623 is the odd composite number because
a) It has factors 1, 3, 541 and 1623
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all