Prime Number Finder

primes_n_2_m_via_gs.py

# Prime Number Finder
# Find all prime numbers betweeen 2 integers
# From a Grant Sanderson video
# Lockdown Math lesson 7 "What makes the natural log "natural"?
# Published May 8 2020
# https://www.3blue1brown.com/lessons/ldm-natural-logs

import numpy as np
import math

def get_primes(_n_min, _n_max):
    result = []
    for x in range(max(_n_min,2), _n_max):
        has_factor = False
        for p in range(2, int(np.sqrt(x)) +1):
            if x % p == 0:
                has_factor = True
                break
        if not has_factor:
            result.append(x)
    return result

print("Call get_primes(start,end)")

# Example

pnums = get_primes(70,90)
total = len(pnums)
print(total)
print(pnums)