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Both numbers are composite numbers. Using the rules of divisibility, 2312 is composite because it is an even number that ends with 0, 2, 4, 6, or 8. 3819 is composite because the sum of its digits equal 21, a number that is divisible by 3, so the number itself is divisible by 3.

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โˆ™ 2014-10-10 11:35:00
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โˆ™ 2014-10-10 14:22:08

They are both composite numbers because they have more than two factors

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Q: Which number is a composite number 2312 or 3819 and how do you know?
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