The Largest Known Primes

Are you looking for the largest known primes? Lists of records? Information on who finds the biggest primes (and how?) You are at the right place! Here we keep the list of the 5000 largest known primes, updated hourly (hundreds of new primes are submitted every month). We are the world's primary source to the current prime number records.

The current list of primes
- One page summary (introduction and a few records)
- Downloading the list of the largest known primes
- Search the database of primes
- The Top 20 Primes of Selected Forms
Background information
- A short introduction to primes
- How do you prove large numbers are prime?
- How can I find a record prime? (current top programs)
- What projects might I join? current top projects
Tell me more!
- The Prime Glossary -- definitions of prime terms
- Answers to frequently asked questions
- Prime Curios! amazing and odd facts about prime numbers
- Who found these primes?

Note: these are the largest known primes--so they are very big (most have hundreds of thousands of digits!) If you want smaller primes, say the first ten thousand primes or first hundred million primes, see lists of small primes.

Table 'prime': 136816 entries, last updated: 4/7/2026 at 7:37 UTC.: Total data length 12742444 bytes (average prime entry length 93 Dynamic) This table stores the list of primes
Table 'person': 4440 entries, last updated: 4/7/2026 at 4:37 UTC.: Total data length 934748 bytes (average person entry length 210 Dynamic) This table stores the list of persons, programs and projects
Table 'log': 114323 entries, last updated: 4/7/2026 at 4:37 UTC.: Total data length 21741868 bytes (average log entry length 190 Dynamic) Logs changes to the database
Table 'code': 7644 entries, last updated: 4/7/2026 at 7:37 UTC.: Total data length 2592352 bytes (average code entry length 339 Dynamic) This table stores links from the codes to the provers
Table 'archival_tag': 29768 entries, last updated: 4/6/2026 at 18:37 UTC.: Total data length 1832684 bytes (average archival_tag entry length 61 Dynamic) Tags to indicate type of prime, class rank and weights...
Combined size:: 39,844,096 bytes