Multiples and factors.
Prime numbers


First and
Second Year of
Secondary Education


1. Prime factor decomposition of a number.  
Prime
factor decomposition of a number means writing it as a product of prime factors. 

Investigate:  Do you think that the size of a number is related to the quantity of prime factors?  If you work out the prime factor decomposition of a large number, do you expect it to be formed by many factors?  How many factors compose a prime number? 
2. Find the number from which this prime factor decomposition comes.  

Eduardo Barbero Corral  
Spanish Ministry of Education. Year 2007  
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