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245 is not prime.

Composite: (5 x 49 or 5 x 7 x 7)

Also you can automatically determine a number as composite if:

it ends with 2, 4, 6, 8, and 0: multiples of 2; or

it ends with 5: multiples of 5.

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โˆ™ 2010-01-29 09:47:38
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Q: Is 245 a prime number or a composite number?
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