Factoring Worksheet

Factor the following numbers to their prime factors.

1 a.   257

 
 
 
 
 
 
1 b.   133

 
 
 
 
 
 
2 a.   227

 
 
 
 
 
 
2 b.   212

 
 
 
 
 
 
3 a.   289

 
 
 
 
 
 
3 b.   156

 
 
 
 
 
 
4 a.   97

 
 
 
 
 
 
4 b.   145

 
 
 
 
 
 
Page 2

Answer Key

1 c.  prime
1 c.  7 × 19
2 b.  prime
2 b.  22 × 53
3 b.  172
3 a.  22 × 3 × 13
4 c.  prime
4 c.  5 × 29


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