Prime Factors of a Number | MathHelp.com - By MathHelp.com
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| 00:0-1 | Here were asked to list all of the factors of | |
| 00:02 | 10 and tell whether the number is prime or composite | |
| 00:06 | . to find the factors of 10 begin by dividing | |
| 00:09 | 10 x one , Which gives us 10 . This | |
| 00:15 | means that one and 10 are factors Note that one | |
| 00:21 | and the number itself will always be factors of a | |
| 00:24 | given number . Next divide 10 x two Which gives | |
| 00:30 | us five . This means that two and 5 are | |
| 00:35 | factors Next Divide 10 x three . Yeah . Yeah | |
| 00:41 | . But notice that 10 doesn't divide by three evenly | |
| 00:44 | . So three is not a factor . Next Divide | |
| 00:49 | 10 x four . Since 10 doesn't divide evenly by | |
| 00:54 | 4 , 4 is not a factor Next divide 10 | |
| 00:58 | x five which gives us to . But notice that | |
| 01:04 | five and 2 are repeat factors . Once we hit | |
| 01:08 | repeat factors , all other factors we try will repeat | |
| 01:12 | . So we can stop here . Which means that | |
| 01:15 | the factors of 10 are one , two , five | |
| 01:21 | and 10 Notice that 10 has four factors . If | |
| 01:27 | a number has more than two factors , it's called | |
| 01:30 | a composite number . So 10 is a composite number | |
| 01:35 | . Yeah . |
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