{"id":600,"date":"2017-01-21T15:38:43","date_gmt":"2017-01-21T23:38:43","guid":{"rendered":"http:\/\/www.cornerspots.com\/sirknightj\/?p=600"},"modified":"2017-06-26T08:16:20","modified_gmt":"2017-06-26T16:16:20","slug":"first-one-million-prime-numbers","status":"publish","type":"post","link":"https:\/\/www.sirknightj.com\/blog\/2017\/01\/21\/first-one-million-prime-numbers\/","title":{"rendered":"First One Million Prime Numbers"},"content":{"rendered":"

Recently, I’ve been learning python.<\/p>\n

<\/p>\n

I’ve made a program to find the first 1,000,000 Prime Numbers.<\/p>\n

Here’s the zip file:\u00a0FirstOneMillionPrimeNumbers<\/a><\/p>\n

And here’s the code I created:<\/p>\n

\r\nimport math\r\ntext_file = open(\"Output.txt\", \"w\")\r\n\r\nprimes = [2, 3]\r\nprint(\"This file was made for cornerspots.com\\n1. 2\\n2. 3\")\r\ntext_file.write(\"This file was made for cornerspots.com\\n1. 2\\n\")\r\nnumber = 1\r\nrowNumber = 2\r\n\r\nwhile rowNumber < 10000000:\r\n    isPrime = True\r\n    number += 2\r\n\r\n    for prime in primes:\r\n        # if number is bigger than the sqrt of num we're checking\r\n        if prime > math.sqrt(number):\r\n            break\r\n        # is not a prime\r\n        if number % prime == 0:\r\n            isPrime = False\r\n            break\r\n\r\n    if isPrime:\r\n        rowNumber += 1\r\n        text_file.write(str(rowNumber) + \". \" + str(number) + \"\\n\")\r\n        primes.append(number)\r\n        print(str(rowNumber) + \". \" + str(number))\r\n\r\ntext_file.close()<\/code><\/pre>\n
 <\/p>\n
This takes roughly 30-40 minutes to complete on my surface 3, but only 5 minutes on my PC.<\/p>\n
And in case you’re wondering, the one millionth prime number is\u00a015,485,857.<\/p>\n
 <\/p>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
Recently, I’ve been learning python.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[7],"tags":[],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t