Answer:

The number 3×7×13×19+26 is a composite number because it is divisible by 13.

Step-by-step explanation:

The given number is

3×7×13×19+26

A number is called a composite number, if it has at least one divisor other than 1 and itself.

The factors of 26 are 2 and 13.

The given number can be written as

It means the given number is completely divided by 13.

Since the given number is divisible by 13, therefore it is a composite number.

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