Factoring Worksheet

Factor the following numbers to their prime factors.

1 a.   107

 
 
 
 
 
 
1 b.   420

 
 
 
 
 
 
2 a.   319

 
 
 
 
 
 
2 b.   197

 
 
 
 
 
 
3 a.   39

 
 
 
 
 
 
3 b.   130

 
 
 
 
 
 
4 a.   430

 
 
 
 
 
 
4 b.   303

 
 
 
 
 
 
Page 2

Answer Key

1 c.  prime
1 c.  22 × 3 × 5 × 7
2 d.  11 × 29
2 b.  prime
3 b.  3 × 13
3 b.  2 × 5 × 13
4 c.  2 × 5 × 43
4 c.  3 × 101


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