Is 1869 a Composite number

 Is 1869 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 1869 is composite or not first we have to find its factors.

 

Factors of 1869:

  • If we have taken numbers from 1, 2, 3…for checking factors of 1869, we found that 1869 has factors 1, 3, 7, 21, 89, 267, 623 and 1869. Hence, we must say that 1869 is a composite number.
  • Thus, 1869 is the composite number.
  • If we multiply 1869 by 1, 2, 3 then we get the multiples of 1869 which are 1869, 3738 and so on.

 

 1869 is a Composite number or Prime number

About the number 1869:

  • 1869 has more than two factors which are 1, 3, 7, 21, 89, 267, 623 and 1869 and hence it is the composite number.
  • 1869 is the odd composite number and it is not the perfect square also.
  • If we divide 1869 by 1, 3, 7, 21, 89, 267, 623 and 1869 then we get remainder as zero. Hence, 1, 3, 7, 21, 89, 267, 623 and 1869 are the factors of 1869

 

Note:

  • 1869 is not the perfect square.
  • Factors of 1869: 1, 3, 7, 21, 89, 267, 623 and 1869
  • Prime factors of 1869: 3, 7, 89

 

Conclusion:

  • 1869 is the composite number which has factors 1, 3, 7, 21, 89, 267, 623 and 1869.
  • And hence, 1869 is not the prime number.

 

Multiple Choice Questions:

 

1) 1869 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 1869 are

a) 1

b) 3, 7, 89

c) 1, 21, 267, 623 and 1869

d) 1, 3, 7, 21, 89, 267, 623 and 1869

Ans: b) 1, 21, 267, 623 and 1869

 

3) 1869 is the odd composite number because

a) It has factors 1, 3, 7, 21, 89, 267, 623 and 1869

b) It has more than two factors

c) It is not divisible by 2

d) all

Ans: d) all

Updated: February 28, 2022 — 1:15 pm

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