null created by uktechreviews - https://repl.it/GMTL/1

decay.py

from random import *
particles = []                 
total = 100000             

while (total > 1) :
    for i in range (total):  
        face = randint(1,6)
        particles.append(face)
    for items in particles:     
        if items == 6:
            total -=1
    particles = []             
    print (str(total))

first version