Generalized Fermat Primes, 19
Term: b524288 + 1
Total: 51
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References: PrimePages
Rank Number Digits When Who PrimePages - ID
1 29002212524288 + 1 3912464 Oct 2026 Magnus Bergman; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142515
2 28019492524288 + 1 3904615 Oct 2026 Anonymous; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142538
3 27985952524288 + 1 3904342 Oct 2026 Alex Huetter; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142499
4 27171622524288 + 1 3897618 Oct 2026 Alvaro Morera; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142520
5 26693202524288 + 1 3893573 Oct 2026 Erwin Wes; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142505
6 26689978524288 + 1 3893546 Oct 2026 Willie Black; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142506
7 25427072524288 + 1 3882509 Jul 2026 Valter Cavecchia; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142386
8 23865586524288 + 1 3868078 Apr 2026 Antonio Lucendo; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142210
9 23680116524288 + 1 3866301 Apr 2026 Marius Vultur; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142191
10 22970694524288 + 1 3859376 Mar 2026 Dawid Kwiatkowski; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142132
11 22444816524288 + 1 3854102 Mar 2026 Brandon Lee; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142030
12 22306708524288 + 1 3852697 Mar 2026 Vaughan Davies; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 142005
13 21826264524288 + 1 3847739 Feb 2026 Dr. James Scott Brown; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141965
14 20221496524288 + 1 3830351 Jan 2026 Leo LaiHao Wei; GeneFer; LLR 141484
15 19981416524288 + 1 3827631 Feb 2026 Georges Vinotte; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141624
16 19409636524288 + 1 3821021 Jan 2026 Stefan Larsson; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141462
17 18703062524288 + 1 3812577 Dec 2025 Kai Presler; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141312
18 18529322524288 + 1 3810452 Dec 2025 Kai Presler; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141282
19 18099898524288 + 1 3805113 Sep 2025 Ryan Propper; GFNSvCUDA sieve; GeneFer; Unspecified Proving Program 141037
20 17997078524288 + 1 3803816 Nov 2025 Willie Black; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141254
21 17544674524288 + 1 3798019 Oct 2025 Bruce Marler; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141188
22 17502532524288 + 1 3797471 Oct 2025 Antonio Lucendo; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141183
23 17445908524288 + 1 3796734 Oct 2025 Michael Millerick; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 141172
24 17177670524288 + 1 3793205 Oct 2025 Anonymous; GFNSvCUDA sieve; GeneFer; AthGFNSieve; Science United; PrimeGrid; LLR 141135
25 16211276524288 + 1 3780021 Aug 2025 Ryan Propper; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 140991
26 15958750524288 + 1 3776446 Jul 2025 Valter Cavecchia; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 140947
27 15852200524288 + 1 3774921 Jul 2025 Jann Kickler; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 140928
28 13520762524288 + 1 3738699 Feb 2025 Zimai Wu; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 140170
29 13427472524288 + 1 3737122 Mar 2025 Jean-Luc Garambois; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 140291
30 12900356524288 + 1 3728004 Jan 2025 Valter Cavecchia; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 139212
31 12693488524288 + 1 3724323 Jan 2025 Jason Biggs; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 138830
32 11937916524288 + 1 3710349 Oct 2024 Murray Sondergard; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 138627
33 10913140524288 + 1 3689913 Jun 2024 Heinrich Podsada; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 138229
34 9332124524288 + 1 3654278 Jun 2024 Detlef Lexut; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 138244
35 8630170524288 + 1 3636472 Apr 2024 Antonio Lucendo; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 137963
36 6339004524288 + 1 3566218 Jun 2023 Ken Glennie; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 136150
37 5897794524288 + 1 3549792 Dec 2022 Ryan Propper; GFNSvCUDA sieve; GeneFer; Unspecified Proving Program 134642
38 4896418524288 + 1 3507424 May 2022 Tom Greer; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 133947
39 3638450524288 + 1 3439810 May 2020 Wolfgang Schwieger; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 130938
40 3214654524288 + 1 3411613 Dec 2019 Alen Kecic; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 130199
41 2985036524288 + 1 3394739 Sep 2019 Peter Harvey; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 129943
42 2877652524288 + 1 3386397 Jun 2019 Roman Vogt; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 126598
43 2788032524288 + 1 3379193 Apr 2019 Ed Goforth; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 126397
44 2733014524288 + 1 3374655 Mar 2019 Yair Givoni; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 126324
45 2312092524288 + 1 3336572 Aug 2018 Rob Gahan; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 125520
46 2061748524288 + 1 3310478 Mar 2018 Cesare Marini; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 124537
47 1880370524288 + 1 3289511 Jan 2018 Dr. James Scott Brown; GFNSvCUDA sieve; GeneFer; AthGFNSieve; PrimeGrid; LLR 124143
48 475856524288 + 1 2976633 Aug 2012 Masashi Kumagai; geneferCUDA; AthGFNSieve; PrimeGrid; LLR 108818
49 356926524288 + 1 2911151 Jul 2012 Tim McArdle; GenefX64; AthGFNSieve; PrimeGrid; LLR 108492
50 341112524288 + 1 2900832 Jun 2012 Peyton Hayslette; geneferCUDA; AthGFNSieve; PrimeGrid; LLR 107930
51 75898524288 + 1 2558647 Nov 2011 Michael Goetz; geneferCUDA; AthGFNSieve; PrimeGrid; OpenPFGW 103235