Generalized Fermat Primes, 19
Term: b524288 + 1
Total: 45
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References: PrimePages
Rank Number Digits When Who PrimePages - ID
1 25427072524288 + 1 3882509 Jul 2026 Valter Cavecchia; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142386
2 23865586524288 + 1 3868078 Apr 2026 Antonio Lucendo; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142210
3 23680116524288 + 1 3866301 Apr 2026 Marius Vultur; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142191
4 22970694524288 + 1 3859376 Mar 2026 Dawid Kwiatkowski; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142132
5 22444816524288 + 1 3854102 Mar 2026 Brandon Lee; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142030
6 22306708524288 + 1 3852697 Mar 2026 Vaughan Davies; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142005
7 21826264524288 + 1 3847739 Feb 2026 Dr. James Scott Brown; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141965
8 20221496524288 + 1 3830351 Jan 2026 Leo LaiHao Wei; GeneFer; LLR 141484
9 19981416524288 + 1 3827631 Feb 2026 Georges Vinotte; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141624
10 19409636524288 + 1 3821021 Jan 2026 Stefan Larsson; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141462
11 18703062524288 + 1 3812577 Dec 2025 Kai Presler; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141312
12 18529322524288 + 1 3810452 Dec 2025 Kai Presler; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141282
13 18099898524288 + 1 3805113 Sep 2025 Ryan Propper; GFNSvCUDA sieve; GeneFer; Unspecified Proving Program 141037
14 17997078524288 + 1 3803816 Nov 2025 Willie Black; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141254
15 17544674524288 + 1 3798019 Oct 2025 Bruce Marler; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141188
16 17502532524288 + 1 3797471 Oct 2025 Antonio Lucendo; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141183
17 17445908524288 + 1 3796734 Oct 2025 Michael Millerick; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141172
18 17177670524288 + 1 3793205 Oct 2025 Anonymous; GFNSvCUDA sieve; GeneFer; AthGFNSieve; Science United; PrimeGrid; LLR 141135
19 16211276524288 + 1 3780021 Aug 2025 Ryan Propper; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 140991
20 15958750524288 + 1 3776446 Jul 2025 Valter Cavecchia; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 140947
21 15852200524288 + 1 3774921 Jul 2025 Jann Kickler; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 140928
22 13520762524288 + 1 3738699 Feb 2025 Zimai Wu; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 140170
23 13427472524288 + 1 3737122 Mar 2025 Jean-Luc Garambois; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 140291
24 12900356524288 + 1 3728004 Jan 2025 Valter Cavecchia; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 139212
25 12693488524288 + 1 3724323 Jan 2025 Jason Biggs; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 138830
26 11937916524288 + 1 3710349 Oct 2024 Murray Sondergard; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 138627
27 10913140524288 + 1 3689913 Jun 2024 Heinrich Podsada; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 138229
28 9332124524288 + 1 3654278 Jun 2024 Detlef Lexut; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 138244
29 8630170524288 + 1 3636472 Apr 2024 Antonio Lucendo; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 137963
30 6339004524288 + 1 3566218 Jun 2023 Ken Glennie; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 136150
31 5897794524288 + 1 3549792 Dec 2022 Ryan Propper; GFNSvCUDA sieve; GeneFer; Unspecified Proving Program 134642
32 4896418524288 + 1 3507424 May 2022 Tom Greer; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 133947
33 3638450524288 + 1 3439810 May 2020 Wolfgang Schwieger; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 130938
34 3214654524288 + 1 3411613 Dec 2019 Alen Kecic; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 130199
35 2985036524288 + 1 3394739 Sep 2019 Peter Harvey; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 129943
36 2877652524288 + 1 3386397 Jun 2019 Roman Vogt; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 126598
37 2788032524288 + 1 3379193 Apr 2019 Ed Goforth; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 126397
38 2733014524288 + 1 3374655 Mar 2019 Yair Givoni; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 126324
39 2312092524288 + 1 3336572 Aug 2018 Rob Gahan; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 125520
40 2061748524288 + 1 3310478 Mar 2018 Cesare Marini; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 124537
41 1880370524288 + 1 3289511 Jan 2018 Dr. James Scott Brown; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 124143
42 475856524288 + 1 2976633 Aug 2012 Masashi Kumagai; geneferCUDA; AthGFNSieve; PrimeGrid; LLR 108818
43 356926524288 + 1 2911151 Jul 2012 Tim McArdle; GenefX64; AthGFNSieve; PrimeGrid; LLR 108492
44 341112524288 + 1 2900832 Jun 2012 Peyton Hayslette; geneferCUDA; AthGFNSieve; PrimeGrid; LLR 107930
45 75898524288 + 1 2558647 Nov 2011 Michael Goetz; geneferCUDA; AthGFNSieve; PrimeGrid; OpenPFGW 103235