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Primo record

2116224 - 15905
34987 decimal digits

The certification of this number was done by Peter Kaiser with Primo 4.1.1 [°]. The certification process took 694 days for the phase 1 and 58 days for the phase 2 using a Dual Intel E2667 processor (16 cores at 3.2 GHz).

[°] The original format-3 certificate (100.9 MB) was updated to a format-4 certificate in order to get a smaller file (75.5 MB).


20 greatest numbers certified with Primo
2116224 - 15905
34987 decimal digits
 Certified by Peter Kaiser (EU, 2017) [more...]
Certificate:
ecpp34987-f4.7z.001 (10 MB)
ecpp34987-f4.7z.002 (10 MB)
ecpp34987-f4.7z.003 (10 MB)
ecpp34987-f4.7z.004 (8 MB)
Palindrome
(14665 × 1034110 - 56641)/9999
34111 decimal digits
 Certified by Paul Underwood (EU, 2018) [more...]
Certificate:
ecpp34111-f4.7z.001 (10 MB)
ecpp34111-f4.7z.002 (10 MB)
ecpp34111-f4.7z.003 (10 MB)
Picture(57885161)
34093 decimal digits
 Certified by Paul Underwood (EU, 2016) [more...]
Certificate:
ecpp34093-f4.7z.001 (10 MB)
ecpp34093-f4.7z.002 (10 MB)
ecpp34093-f4.7z.003 (10 MB)
ecpp34093-f4.7z.004 (5 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)
Factor of Phi(12345,7176)
25331 decimal digits
 Certified by Tom Wu (US, 2017) [more...]
Certificate:
ecpp25331.7z.001 (10.5 MB)
ecpp25331.7z.002 (7.0 MB)
(283339 + 1)/3
25088 decimal digits
 Certified by Tom Wu (US, 2014) [more...]
Certificate: ecpp25088.7z (23.5 MB)
Int(1.5137752) + 13566
24257 decimal digits
 Certified by Pierre Cami (EU, 2015)
Certificate: ecpp24257.7z (21.8 MB)
Lehmer-Ramanujan(691,1523)
23770 decimal digits
 Certified by Philippe Alsina, Pierre Gazzano, Nik Lygeros, Olivier Rozier and André Solaris (EU, 2014)
Certificate: ecpp23770.7z (22.1 MB)
Lehmer-Ramanujan(257,1699)
22506 decimal digits
 Certified by Patrice Deloche, Nik Lygeros and Olivier Rozier (EU, 2014)
Certificate: ecpp22506.7z (20.2 MB)
1022250 + 57913
22251 decimal digits
 Certified by Pierre Cami (EU, 2014)
Certificate: ecpp22251.7z (19 MB)
273845 + 14717
22230 decimal digits
 Certified by Peter Kaiser (EU, 2013) [more...]
Certificate: ecpp22230.7z (18.3 MB)
273360 + 10711
22084 decimal digits
 Certified by Peter Kaiser (EU, 2014) [more...]
Certificate: ecpp22084.7z (20.7 MB)
Fibonacci(104911)
21925 decimal digits
 Certified by Mathew Steine (EU, 2015) [more...]
Certificate:
ecpp21925.7z.001 (10 MB)
ecpp21925.7z.002 (8.1 MB)
20170108*1021700 + 39
21708 decimal digits
 Certified by Peter Kaiser (EU, 2016)
ecpp21708.7z.001 (10.5 MB)
ecpp21708.7z.002 (8.4 MB)
Phi(47498,10)
20160 decimal digits
 Certified by Ray Chandler (US, 2014) [more...]
Certificate: ecpp20160.7z (16.1 MB)
Lehmer-Ramanujan(619,1297)
19900 decimal digits
 Certified by Patrice Deloche, Nik Lygeros and Olivier Rozier (EU, 2014)
Certificate: ecpp19900.7z (16.2 MB)
Lucas(94823)
19817 decimal digits
 Certified by Paul Underwood (EU, 2014) [more...]
Certificate: ecpp19817.7z (14.8 MB)
Factor of Phi(8055,40734)
19632 decimal digits
 Certified by Tom Wu (US, 2015) [more...]
Certificate: ecpp19632.7z (15.3 MB)


ECPP records set with Primo
2116224 - 15905
34987 decimal digits
 Certified by Peter Kaiser (EU, 2017) [more...]
Certificate:
ecpp34987-f4.7z.001 (10 MB)
ecpp34987-f4.7z.002 (10 MB)
ecpp34987-f4.7z.003 (10 MB)
ecpp34987-f4.7z.004 (8 MB)
Picture(57885161)
34093 decimal digits
 Certified by Paul Underwood (EU, 2016) [more...]
Certificate:
ecpp34093-f4.7z.001 (10 MB)
ecpp34093-f4.7z.002 (10 MB)
ecpp34093-f4.7z.003 (10 MB)
ecpp34093-f4.7z.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

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