Title says all. I need to make a code that gives the prime factorization of a number and put them in a (this is important) a list.

Here is some code to help you, but you need to do some work.

``````# define your own function that check for prime
def isPrime(x):
pass

def primeFactorization(num):

pfactors = []
while True:
j = 2
while j < num+1:
if num%j==0 and isPrime(j):
num = num/j …``````

## All 3 Replies

Here is some code to help you, but you need to do some work.

``````# define your own function that check for prime
def isPrime(x):
pass

def primeFactorization(num):

pfactors = []
while True:
j = 2
while j < num+1:
if num%j==0 and isPrime(j):
num = num/j
pfactors.append(j)
break
j+=1
if num==1:
break
return pfactors``````

Title says all. I need to make a code that gives the prime factorization of a number and put them in a (this is important) a list.

def is_prime(num):
divisor=2
if(num==1):
return False
while(divisor<=num/2):
if(num%divisor==0):
return False
else:
divisor=divisor+1
return True

def print_prime_factors(num):
for i in range(2,num+1):
if(num==1):
break
while(num%i==0):
print (i)
num=num/i
i=next_prime(i)

I do not think that your code is working properly. Here is my code. You should call the last function.

You do not need to test all numbers neither test for prime as factorin wjile loop ensures prime. You can test for only valid prime candidates n * 6 +- 1 after testing with 2 and 3. BTW this is old solved thread and I do not know how much this post helps OP, make own thred with link to old one you read. !lso the function next_prime in your code does not exist.

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