Decimal expansion of the prime N with 50 digits per line.

First 70000 digits of N with
every "1" replaced by ".".
The last 30000 digits could not be chosen freely.
They were determined by the need for N+1 factors.

Prime factors of N+1 with 50 digits per line.

"1" replaced by "." in 30
titanic factors. Proved by Marcel Martin's Primo.

The factors give 30.00% factorization of N+1, exactly what is needed for a
Konyagin-Pomerance primality proof (PrimeForm/GW would need 33.33% for a BLS proof).

The prime was found in July 2005 in a distributed project by
PrimeForm e-group.

Picture design by Paul Underwood.

Primo primality proofs of N+1 factors and sieving to 10^12 by Jens Kruse Andersen.

PrimeForm/GW prp tests by Jens Kruse Andersen, James Chislett, Jason Earls,
Vladimir Michailovich Ulyanov, Paul Underwood, Thomas Wolter.

Prp found by Jason Earls (and later Thomas Wolter, see below).

Konyagin-Pomerance primality proof by David Broadhurst.

Update August 9 2005: Thomas Wolter found a second prp on the same form.

David Broadhurst again completed a Konyagin-Pomerance primality proof.
It contains the decimal expansion. The picture part and known N+1 factors are
the same.

Last updated August 9 2005.