Website Author: Ryan D. Ingram 
Administrator Email: 
Page Requests Today 1759 
  Page Requests Yesterday 25110
Index[1 - 100000000000]   Prime(2 - 2760727302517)

Web Prime Number Archive

What is a prime number? a: any real number (no fractional element) that can only be divided by its self and the root number 1. A negative is never prime such as -3 is divisible by 1 and -3 but also -1 and 3.
The website allowes three ways to navigate the pages the first way is by the page query. Page 1 will have the first thousand primes ending with the one thousandth prime. Page 10 will end with the ten thousandth prime, page 1000 will end with the millionth prime, etc.
The second way to navagate is by an index query which is simple for example 1 though 1000 will return the first page of the index. The Last way to navigate is with a prime query that will display the page the number in question would fall on and return a yes on no to if the number is actualy prime. If you want to know why a number is not prime you might want to go to a sister site
If multiple querys are requested at the same time the least resource intensive query will be used and the other query/s will not be considered. If a page query is requested it will be fulfilled even if other querys are requested. If a page query is absent and an index query is requested regardless if a prime query is requested or not it will be fulfilled. The only way for a prime query to be fulfilled is when a page and index query are absent. Archive as Text Files

The website lets anyone type in a number and check if it is prime and where the prime is located. Some projects that is not enough so the whole index can be downloaded as text files for the projects that need the whole index to play with.
First Prime  =  2
Tenth Prime  =  29
Hundredth Prime  =  541
Thousandth Prime  =  7,919
Ten Thousandth Prime  =  104,729
Hundred Thousandth Prime  =  1,299,709
Millionth Prime  =  15,485,863
Ten Millionth Prime  =  179,424,673
Hundred Millionth Prime  =  2,038,074,743
Billionth Prime  =  22,801,763,489
Ten Billionth Prime  =  252,097,800,623
Twenty Billionth Prime  =  518,649,879,439
Twenty Five Billionth Prime  =  654,124,187,867
Thirty Billionth Prime  =  790,645,490,053
Fourty Billionth Prime  =  1,066,173,339,601
Fifty Billionth Prime  =  1,344,326,694,119
Sixty Billionth Prime  =  1,624,571,841,097
Seventy Billionth Prime  =  1,906,555,030,411
Seventy Five Billionth Prime  =  2,048,116,998,241
Eighty Billionth Prime  =  2,190,026,988,349
Ninety Billionth Prime  =  2,474,799,787,573
Hundred Billionth Prime  =  2,760,727,302,517
Index Size since  Date Added (month-day-year)
1 billion since  12-15-2010 with v1.0
10 billion since  06-30-2011 with v1.1
20 billion since  04-14-2012
30 billion since  10-31-2012
40 billion since  01-26-2015 with v1.2
50 billion since  04-22-2015
60 billion since  07-04-2015
70 billion since  07-04-2015
75 billion since  07-04-2015
80 billion since  10-20-2015
90 billion since  10-20-2015
100 billion since  10-20-2015 has billions of prime numbers listed and fully indexed with one thousand numbers per page. The changes to the site has always been more about data but the user experience is important and after ease of user use, the goal is to get more information into the archive. The website started with two 1500GB drives in mirror (raid 1) to initially store 1 billion prime numbers and with file system modifications version 1.0 capped out at 2 billion. With some time version 1.1 released 10 billion primes with a new file structure, a better compression of the html pages and the much appreciated though short lived significant financial support from google's advertising. I was able to buy the website four 2000GB drives and controller for parity or raid 5 which supplied 5.5TB of space to have the site cap at 30 billion numbers. Now the newest version 1.2 is a major improvment to the data structure and on request page generation, the first billion prime numbers uses 7.5GB of space. Using a new 1TB SSD the latest 1.2 release is launching with 40 billion numbers consuming 300GB of space. The goal has always been to archive the first trillion prime numbers and with the 40 billionth prime released the site has every prime less than 1 trillion discovered and indexed. I really enjoy the emails from regular users who noticed the website going down a few times in the past when drives failed or the internet was shut off. I am happy to hear that someone has a use for the archive or finds it entertaining and most of those emails were sent during weeks the site required money and repair, providing the motivation to keep the website going and growing. The advertising provides almost nothing but keeping them away from accidental clicks and maintain a good user experience is more important than profit. The website is never going to be subscription based for the same reason and most users are students, so free and accessible information is a priority.