Python | sympy.primefactors() method

With the help of sympy.primefactors() method, we can find the prime factors of a given number. Unlike factorint(), primefactors() does not return -1 or 0.

Syntax: primefactors(n)

Parameter:
n – It denotes an integer.



Returns: Returns a list of prime factors of the given integer.

Example #1:

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# import primefactors() method from sympy
from sympy import primefactors
  
n = 2 * 6*21 * 11
  
# Use primefactors() method 
primefactors_n = primefactors(n) 
      
print("The prime factors of {} : {}".format(n, primefactors_n))

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Output:

The prime factors of 2772 : [2, 3, 7, 11]

Example #2:

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# import primefactors() method from sympy
from sympy import primefactors
  
n = -210
  
# Use primefactors() method 
primefactors_n = primefactors(n) 
      
print("The prime factors of {} : {}".format(n, primefactors_n))

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Output:

The prime factors of -210 : [2, 3, 5, 7]


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