Related to : Complexity of this prime number search algorithm

Complexity of a basic algorithm? 
When determining complexities, we don't include constants or
coefficients. Instead of O(2N + 2), it should be O(n). We only care
about numbers if they're exponential, i.e. 2^n or n^2, log2(n), etc.
Putting that aside, are you sure this is O(n)? O(n) would mean that it
runs n times, but it looks like j is going to catch up to n before n
times. See what I'm saying?
EDIT: Ok, here's what's going o

What is the time complexity for AngularJS's dirty checking algorithm? 
The dirty checking happens in the $diggest cycle, so we need to study
the complexity of the $diggest cycle.
The $diggest cycle is the stage in which Angular ensures the changes
of the model have settled,
so that it can render the view with the updated changes. In order to
do that,
Angular starts a loop in which each iteration evaluates all the
template expressions
of the view, as well as the $wat

Prime Number Theorem Python 
My suggestion of how to do this (in relation to your current code) is
as follows:
previous = 2
n = 0
for i in range(3,10000000):
if Is_Prime(i):
n = n+1
current = i
gn = current  previous
previous = i
if n % 1000 == 0:
print "Now at the gap between prime",n,"and prime",n+1
average_gap = (i2)/float(n);
# (n+1)st pri

Use 2 Threads to calculate the nth prime number in Python 
This is the answer I have currently,
import threading, doctest, cProfile, time, random
result = [2]
counter = 1
def get_int(num):
for i in range(3, num):
yield i
def is_prime(num):
for j in range(2,int(num)):
if (num % j) == 0:
return False
result.append(num)
return True
def prime_calculator(nth):
lock = threading.Lock()
global result, count

How to determine if a number is a prime in a faster fashion using additional threads? 
I'm going to ignore whether you've got the most efficient approach and
focus on how your current code could be faster with more threads.
You currently iterate through all the numbers from 2 > x and
perform a simple test. A way to improve performance might be to split
this task into Z chunks and start Z threads to perform the tests in
parallel.
E.g. if you had two threads, you would have one
