t5k.org

• charset: utf-8
• name: viewport content: width=device-width, initial-scale=1, shrink-to-fit=no
• equiv: x-ua-compatible content: ie=edge
• name: Author content: Chris K. Caldwell
• name: description content: Access to hundreds of pages of award-winning information on prime numbers--with links to thousands of pages elsewhere. We host the searchable database of the 5000 largest known primes (updated hourly). We also have a glossary, top 10 records lists, prime-music, programs, free downloads, and much more!
• name: keywords content: prime, primes, composite, number theory, mathematics, Mersenne, largest known primes, primality, factorization, GIMPS, integer, new, big, recent

• Home
• Top 5000 List
• Records for Different Types
• Prover Bios
• SEARCH PRIMES
• Frequently Asked Questions
• Prime Curios!
• Prime Glossary
• Largest Known Primes
• PRINT LISTS
• VERIFICATION STATUS
• Minimum Sizes
• 1,000 primes
• 50,000,000 primes.
• top 20 records
• twin primes
• Mersenne primes
• up to 300 digits
• special forms
• Lists of Small Primes
• various database searches
• Proving
•       FAQ      
• Prime Glossary
• http://t5k.org/#collapse1
• Largest Known by Year
• http://t5k.org/#collapse2
• How Big of an Infinity?
• http://t5k.org/#collapse3
• A short note
• http://t5k.org/#collapse4
• Check Primality
• http://t5k.org/notes/image.html
• Visit the Prime Curios!
• Proving Primality
• Proofs
• Mersenne Primes
• Donate
• Top 20 Provers
• Contact Us
• PrimePages
• Privacy notice

            Domain Name: T5K.ORG
Registrar: Squarespace Domains II LLC
Domain Status: client delete prohibited
Domain Status: client transfer prohibited
Registry Expiry Date: 2026-12-15T00:00:18.212Z
Creation Date: 2022-12-15T00:00:18.212Z
Updated Date: 2025-12-05T00:40:07.411Z
Name Server: NS-CLOUD-D4.GOOGLEDOMAINS.COM
Name Server: NS-CLOUD-D1.GOOGLEDOMAINS.COM
Name Server: NS-CLOUD-D3.GOOGLEDOMAINS.COM
Name Server: NS-CLOUD-D2.GOOGLEDOMAINS.COM
REGISTRAR Contact: Squarespace Domains II LLC
>>> Last update of RDAP database: 2026-03-13T12:14:53Z         

			User-agent: *
Disallow: /avoid_this/
Disallow: /manual/
Disallow: /en_US/
Disallow: /usage/
Disallow: /TE/
Disallow: /bin/
Disallow: /bios/newcode.php
Disallow: /bios/edit.php
Disallow: /primes/newcode.php
Disallow: /primes/submit.php
Disallow: /curios/submit.php
Disallow: /curios/page.php?rank
Disallow: *generic_edit.php
Disallow: /primes/search.php
Disallow: /primes/generic_edit.php
Disallow: /bios/top20.php?type
Disallow: /bios/top20.php\?type
Crawl-delay: 30

User-agent: LinkChecker
Disallow:

## Due to a bug in linklint, must first specify a disallow in order for 
## for all other directories to be allowed. Feel free to add other
## disallows below the first disallow line.
User-agent: LinkLint
Disallow: /workaroundForLinkLintRandomDirForConfig
Allow: *
        

Техническое SEO

SEO на странице

Контент и UX