1001
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NO. It's composite.
The first composite number is 4.
The two-digit factors of 100 and 1000 are all composite.
it is composite. it is the 12th triangular number. it is the 56th composite number. it is the product of the first even number and the 25th composite number.
A prime number is a number with two and only two factors: 1 (also known as unity) and itself. A composite number is a number with more than two factors; in other words, it has at least one factor besides 1 and itself. 1000 has factors other than 1 and itself, so it is not a prime number. For example, it is divisible by 10 because it ends with a 0. Therefore, 1000 is a composite number.