Is 1591 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 1591 is composite or not first we have to find its factors.
Contents
Factors of 1591:
- If we have taken numbers from 1, 2, 3…for checking factors of 1591, we found that 1591 has factors 1, 37, 43 and 1591. Hence, we must say that 1591 is a composite number.
- Thus, 1591 is the composite number.
- If we multiply 1591 by 1, 2, 3 then we get the multiples of 1591 which are 1591, 3182 and so on.
1591 is a Composite number or Prime number
About the number 1591:
- 1591 has more than two factors which are 1, 37, 43 and 1591 and hence it is the composite number.
- 1591 is the odd composite number and it is not the perfect square also.
- If we divide 1591 by 1, 37, 43 and 1591 then we get remainder as zero. Hence, 1, 37, 43 and 1591 are the factors of 1591
Note:
- 1591 is not the perfect square.
- Factors of 1591: 1, 37, 43 and 1591
- Prime factors of 1591: 37, 43
Conclusion:
- 1591 is the composite number which has factors 1, 37, 43 and 1591.
- And hence, 1591 is not the prime number.
Multiple Choice Questions:
1) 1591 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 1591 are
a) 1
b) 37, 43
c) 1 and 1591
d) 1, 37, 43 and 1591
Ans: b) 1 and 1591
3) 1591 is the odd composite number because
a) It has factors 1, 37, 43 and 1591
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all