Is 147 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 147 is composite or not first we have to find its factors.
Contents
Factors of 147:
- If we have taken numbers from 1, 2, 3…for checking factors of 147, we found that 147 has factors 1, 3, 7, 21, 49 and 147. Hence, we must say that 147 is a composite number.
- Thus, 147 is the composite number.
- If we multiply 147 by 1, 2, 3 then we get the multiples of 147 which are 147, 294, and so on.
About the number 147:
- 147 has more than two factors which are 1, 3, 7, 21 and 147 and hence it is the composite number.
- 147 is the odd composite number and it is not the perfect square also.
- If we divide 147 by 1, 3, 7, 21 and 147 then we get remainder as zero. Hence, 1, 3, 7, 21 and 147 are the factors of 147.
Note:
- 147 is not the perfect square.
- Factors of 147: 1, 3, 7, 21 and 147
- Prime factors of 147: 3, 7
Conclusion:
- 147 is the composite number which has factors 1, 3, 7, 21 and 147.
- And hence, 147 is not the prime number.
Multiple Choice Questions:
1) 147 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 147 are
a) 1
b) 3, 7
c) Both a and b
d) 1471
Ans: b) 3, 7
3) 1 is the not prime factor of 147 because
a) It is the prime number
b) 1 is neither prime nor composite number
c) Both a and b
d) Given statement is false
Ans: b) 1 is neither prime nor composite number