Is 441 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 441 is composite or not first we have to find its factors.
Contents
Factors of 441:
- If we have taken numbers from 1, 2, 3…for checking factors of 441, we found that 441 has factors 1, 3, 7, 9, 21, 49, 63, 147 and 441. Hence, we must say that 441 is a composite number.
- Thus, 441 is the composite number.
- If we multiply 441 by 1, 2, 3 then we get the multiples of 441 which are 441, 882 and so on.
441 is a Composite number or Prime number
About the number 441:
- 441 has more than two factors which are 1, 3, 7, 9, 21, 49, 63, 147 and 441 and hence it is the composite number.
- 441 is the odd composite number and it is the perfect square also.
- If we divide 441 by 1, 3, 7, 9, 21, 49, 63, 147 and 441 then we get remainder as zero. Hence, 1, 3, 7, 9, 21, 49, 63, 147 and 441 are the factors of 441.
Note:
- 441 is the perfect square.
- Factors of 441: 1, 3, 7, 9, 21, 49, 63, 147 and 441
- Prime factors of 441: 3, 7
Conclusion:
- 441 is the composite number which has factors 1, 3, 7, 9, 21, 49, 63, 147 and 441.
- And hence, 441 is not the prime number.
Multiple Choice Questions:
1) 441 is a
a) odd number
b) Prime number
c) Composite number
d) Both a and c
Ans: d) both a and c
2) The prime factors of a composite number 441 are
a) 1
b) 3, 7
c) 1, 9, 21, 49, 63, 147 and 441
d) 1, 3, 7, 9, 21, 49, 63, 147 and 441
Ans: b) 3, 7
3) 441 is the odd composite number because
a) It has factors 1, 3, 7, 9, 21, 49, 63, 147 and 441
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c