! On a website, do not directly link to the certificates (it will not work) but link to this page.


Primo record

(1049081 - 1)/9
49081 decimal digits

The certification of this number was done by Paul Underwood with Primo 4.3.3. The certification process took 20 months using an AMD Ryzen Threadripper 3990X (64 cores).

ECPP records set with Primo
(1049081 - 1)/9
49081 decimal digits
 Certified by Paul Underwood (UK, 2022) [more...]
Certificate:
ecpp49081.7z.001 (10 MB)
ecpp49081.7z.002 (10 MB)
ecpp49081.7z.003 (10 MB)
ecpp49081.7z.004 (10 MB)
ecpp49081.7z.005 (10 MB)
ecpp49081.7z.006 (7 MB)
Partition(1289844341)
40000 decimal digits
 Certified by Paul Underwood (UK, 2020) [more...]
Certificate:
ecpp40000.7z.001 (10 MB)
ecpp40000.7z.002 (10 MB)
ecpp40000.7z.003 (10 MB)
ecpp40000.7z.004 (9.7 MB)
2116224 - 15905
34987 decimal digits
 Certified by Peter Kaiser (EU, 2017) [more...]
Certificate:
ecpp34987.7z.001 (10 MB)
ecpp34987.7z.002 (10 MB)
ecpp34987.7z.003 (10 MB)
ecpp34987.7z.004 (8 MB)
Picture(57885161)
34093 decimal digits
 Certified by Paul Underwood (EU, 2016) [more...]
Certificate:
ecpp34093.7z.001 (10 MB)
ecpp34093.7z.002 (10 MB)
ecpp34093.7z.003 (10 MB)
ecpp34093.7z.004 (8 MB)
Lucas(148091)
30950 decimal digits
 Certified by Paul Underwood (EU, 2015) [more...]
Certificate:
ecpp30950.7z.001 (10 MB)
ecpp30950.7z.002 (10 MB)
ecpp30950.7z.003 (10 MB)
ecpp30950.7z.004 (8.1 MB)
Lehmer-Ramanujan(331,2129)
29492 decimal digits
 Certified by Philippe Alsina, Pierre Gazzano, Nik Lygeros, Olivier Rozier and André Solaris (EU, 2015)
Certificate:
ecpp29492.7z.001 (11.7 MB)
ecpp29492.7z.002 (11.7 MB)
ecpp29492.7z.003 (10.1 MB)
Lucas(140057)
29271 decimal digits
 Certified by Peter Kaiser and Paul Underwood (EU, 2014) [more...]
Certificate:
ecpp29271.7z.001 (11.7 MB)
ecpp29271.7z.002 (11.7 MB)
ecpp29271.7z.003 (11 MB)
(32 × 106959 - 23)/99
6959 decimal digits
 Certified by Hans Rosenthal (EU, 2003).
Certificate: ecpp6959.zip (4.3 MB)
16282536 ... 36478311
5878 decimal digits
 Certified by Jose Luis Gomez Pardo (EU, 2003).
Certificate: ecpp5878b.zip (3.1 MB)
105019 + 43157099231631693
5020 decimal digits
 Certified by Giovanni and Marco La Barbera (EU, 2001).
Certificate: ecpp5020.zip (2.1 MB)
103999 + 4771
4000 decimal digits
 Certified by Giovanni and Marco La Barbera (EU, 2001).
Certificate: ecpp4000.zip (1.3 MB)
(3481223 - 1)/347
3106 decimal digits
 Certified by Giovanni and Marco La Barbera (EU, 2001).


Other primes

Links to some pages reporting primes certified with Primo: