Is 15 a Composite Number?
Uh, yes. 15 is divisible by 5. That means it's composite. Silly.
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Is 1 a composite number?
Or
Is 1 a prime number?
Is 2 a composite number?
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Is 2 a prime number?
Is 3 a composite number?
Or
Is 3 a prime number?
Is 5 a composite number?
Or
Is 5 a prime number?
Is 7 a composite number?
Or
Is 7 a prime number?
Is 9 a composite number?
Or
Is 9 a prime number?
Is 11 a composite number?
Or
Is 11 a prime number?
Is 13 a composite number?
Or
Is 13 a prime number?
...15...
Is 17 a composite number?
Or
Is 17 a prime number?
Is 19 a composite number?
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Is 19 a prime number?
Is 21 a composite number?
Or
Is 21 a prime number?
Is 23 a composite number?
Or
Is 23 a prime number?
Is 25 a composite number?
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Is 25 a prime number?
Is 27 a composite number?
Or
Is 27 a prime number?
Is 29 a composite number?
Or
Is 29 a prime number?
Is 31 a composite number?
Or
Is 31 a prime number?
Is 33 a composite number?
Or
Is 33 a prime number?
Is 35 a composite number?
Or
Is 35 a prime number?
Is 37 a composite number?
Or
Is 37 a prime number?
Is 39 a composite number?
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Is 39 a prime number?
Is 41 a composite number?
Or
Is 41 a prime number?
Is 43 a composite number?
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Is 43 a prime number?
Is 45 a composite number?
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Is 45 a prime number?
Is 47 a composite number?
Or
Is 47 a prime number?
Is 49 a composite number?
Or
Is 49 a prime number?
Is 51 a composite number?
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Is 51 a prime number?
Is 53 a composite number?
Or
Is 53 a prime number?
Is 55 a composite number?
Or
Is 55 a prime number?
...
Maybe you'd like to know
what is the absolute value of -15?
Or try another number:
Random atomic facts:
sulfur
chlorine
argon
potassium
calcium
scandium
titanium
vanadium
chromium
manganese