Is 141 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 141 is composite or not first we have to find its factors.
Factors of 141:
- If we have taken numbers from 1, 2, 3…for checking factors of 141, we found that 141 has factors 1, 3, 47 and 141. Hence, we must say that 141 is a composite number.
- Thus, 141 is the composite number.
- If we multiply 141 by 1, 2, 3 then we get the multiples of 141 which are 141, 282, and so on.
About the number 141:
- 141 has more than two factors which are 1, 3, 47 and 141 and hence it is the composite number.
- 141 is the odd composite number and it is not the perfect square also.
- If we divide 141 by 1, 3, 47 and 141 then we get remainder as zero. Hence, 1, 3, 47 and 141 are the factors of 141.
Note:
- 141 is not the perfect square.
- Factors of 141: 1, 3, 47 and 141
- Prime factors of 141: 3, 47
Conclusion:
- 141 is the composite number which has factors 1, 3, 47 and 141.
- And hence, 141 is not the prime number.
Multiple Choice Questions:
1) 141 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 141 are
a) 1
b) 3, 47
c) Both a and b
d) 1411
Ans: b) 3, 47
3) 1 is the not prime factor of 141 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