Is 1977 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 1977 is composite or not first we have to find its factors.
Contents
Factors of 1977:
- If we have taken numbers from 1, 2, 3…for checking factors of 1977, we found that 1977 has factors 1, 3, 659 and 1977. Hence, we must say that 1977 is a composite number.
- Thus, 1977 is the composite number.
- If we multiply 1977 by 1, 2, 3 then we get the multiples of 1977 which are 1977, 3954 and so on.
1977 is a Composite number or Prime number
About the number 1977:
- 1977 has more than two factors which are 1, 3, 659 and 1977 and hence it is the composite number.
- 1977 is the odd composite number and it is not the perfect square also.
- If we divide 1977 by 1, 3, 659 and 1977 then we get remainder as zero. Hence, 1, 3, 659 and 1977 are the factors of 1977
Note:
- 1977 is not the perfect square.
- Factors of 1977: 1, 3, 659 and 1977
- Prime factors of 1977: 3, 659
Conclusion:
- 1977 is the composite number which has factors 1, 3, 659 and 1977.
- And hence, 1977 is not the prime number.
Multiple Choice Questions:
1) 1977 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 1977 are
a) 1
b) 3, 659
c) 1 and 1977
d) 1, 3, 659 and 1977
Ans: c) 1 and 1977
3) 1977 is the odd composite number because
a) It has factors 1, 3, 659 and 1977
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all