Home n!±1 2^n±3 Acknowledgements Contacts | This website lists the unique factorization of special form numbers such as n!±1 into a product of prime numbers. At the moment, we list 130836 numbers of the form n!±1, 411 of which have been completely factored, along with 342377 factors, 211541 of which are prime. Throughout the whole site, Cn will denote a composite number with n digits, while Pn will denote a prime or probable prime number with n digits. A C factor gains the P status after being recognized 2-PRP, 3-PRP and 5-PRP but a n!±1 or k^n±3 number is declared prime only after certification. Throughout the whole site, a number given in the usual decimal notation is always prime. The n!±1 database was last updated on October 21st, 2006. The 2^n±3 page was last updated on December 21, 2009 |