## Top Twenty's Complete Index |

The Prime Pages keeps a list of the 5000 largest known primes, plus a few each of certain selected archivable forms and classes. These forms are defined in this collection's home page. Below we list those archivable forms and classes, each linked to an explanation and a list of records for that type of prime.

- Arithmetic Progressions of Primes
- Consecutive Primes in Arithmetic Progression
- Cullen primes (modified)
- Cunningham Chains (1st kind)
- Cunningham Chains (2nd kind)
- Divides Phi
- Elliptic Curve Primality Proof (modified)
- Euler Irregular primes
- Factorial primes
- Fermat Divisors (modified)
- Fibonacci cofactor
- Fibonacci Number
- Fibonacci Primitive Part
- Gaussian Mersenne norm (modified)
- Generalized Cullen
- Generalized Fermat (modified)
- Generalized Fermat Divisors (base=10) (modified)
- Generalized Fermat Divisors (base=12) (modified)
- Generalized Fermat Divisors (base=3) (modified)
- Generalized Fermat Divisors (base=5) (modified)
- Generalized Fermat Divisors (base=6) (modified)
- Generalized Fermat Divisors (bases 3,5,6,10,12) (modified)
- Generalized Lucas Number
- Generalized Lucas primitive part
- Generalized Repunit (modified)
- Generalized Unique
- Generalized Woodall

- Irregular Primes (modified)
- Largest Known Primes (modified)
- Lehmer number
- Lehmer primitive part (modified)
- Lucas Aurifeuillian primitive part
- Lucas cofactor
- Lucas Number
- Lucas primitive part
- Mersenne
- Mersenne cofactor
- Near-repdigit
- Palindrome
- Partitions
- Primorial
- Proth (modified)
- Quadruplet
- Repunit
- Sophie Germain (p)
- Triplet
- Twin Primes
- Unique
- Wagstaff (modified)
- Woodall Primes (modified)

Entries with the comments 'new' or 'modified' are new, or have been modified in the last 60 days.

Chris K. Caldwell
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