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A Prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 645 is composite.

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Q: Is 645 a prime number

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It is composite.

645 rounded to the nearest hundred is 600.

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No

645 is a 3-digit number. A single digit in a number can have a place value. A number with several digits cannot.

An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. 645 is an odd number.

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No. It does not read backwards the same as it does forwards.

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606 is. It is the same backwards of forwards.

a factor is a factor , a prime number is a prime number, but a prime factor is a factor which is a prime number. it has to depend on what number number. exp 13 is a prime number

You is called a prime number!You is called a prime number!You is called a prime number!You is called a prime number!

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The phone number of the Semmes Branch is: 251-645-6840.

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The phone number of the Crewe Library is: 434-645-8688.

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