Dual Cullen (probable) Primes
Expression: bn + n
{ only numbers with at least 1000 decimal digits }
Total: 74
PRP: 51   Prime: 23
Sorted informations as a txt-format
Exhaustive-search-table
References: Mersenneforum • PRP Top 10000
Rank Number Digits When PRP found by ... Status on
factordb
1 111181716 + 1181716 1230631 Jul 2023 Kellen Shenton PRP
2 51375156 + 1375156 961193 Sep 2025 Anonymous PRP
3 89367176 + 367176 715770 Mar 2025 Kellen Shenton PRP
4 73197880 + 197880 368715 Jun 2023 Kellen Shenton PRP
5 43141090 + 141090 230467 Jun 2023 Kellen Shenton PRP
6 3436268 + 436268 208153 Jun 2026 Mark Rodenkirch PRP
7 3430622 + 430622 205459 Jun 2026 Mark Rodenkirch PRP
8 2678561 + 678561 204268 May 2006 Henri Lifchitz PRP
9 6198187 + 198187 154220 Jun 2026 Mark Rodenkirch PRP
10 5385114 + 85114 146761 May 2022 Kellen Shenton PRP
11 7975948 + 75948 144121 Jun 2023 Kellen Shenton PRP
12 6041749 + 41749 74237 Jun 2026 Vincent Gautier PRP
13 1957910 + 57910 74053 May 2022 Kellen Shenton PRP
14 6440437 + 40437 73037 May 2026 Vincent Gautier PRP
15 1363618 + 63618 70867 Jun 2026 Vincent Gautier PRP
16 685481 + 85481 66518 Aug 2014 Henri Lifchitz PRP
17 4108889 + 108889 65558 Mar 2024 Hugo Pfoertner PRP
18 2204129 + 204129 61449 Apr 2002 Henri Lifchitz PRP
19 6129226 + 29226 52179 Jun 2023 Kellen Shenton PRP
20 1638613 + 38613 46495 Jun 2026 Vincent Gautier PRP
21 935470 + 35470 33847 Jun 2026 Jiahao He PRP
22 288071 + 88071 26513 Sep 2001 Henri Lifchitz Prime
23 6513318 + 13318 24145 Jun 2026 Vincent Gautier PRP
24 1023769 + 23769 23770 Oct 2001 Milton L. Brown Prime
25 533054 + 33054 23104 Jul 2025 Anonymous PRP
26 1417453 + 17453 20004 Jun 2026 Vincent Gautier PRP
27 1216271 + 16271 17560 Jun 2026 Vincent Gautier PRP
28 1813019 + 13019 16343 Jun 2026 Vincent Gautier PRP
29 718960 + 18960 16024 Mar 2024 Anonymous PRP
30 459424 + 9424 15580 Nov 2025 Norman Luhn PRP
31 522102 + 22102 15449 May 2025 Anonymous PRP
32 468923 + 8923 14837 Nov 2025 Norman Luhn PRP
33 1013807 + 13807 13808 Jul 2001 Milton L. Brown Prime
34 297942 + 7942 11615 Oct 2025 Norman Luhn PRP
35 516176 + 6176 10546 Nov 2025 Norman Luhn PRP
36 18393056 + 3056 9977 Jun 2026 Jiahao He PRP
37 565655 + 5655 9887 Nov 2025 Norman Luhn PRP
38 187541 + 7541 9467 Oct 2025 Norman Luhn PRP
39 99602 + 9602 9163 Oct 2025 Norman Luhn PRP
40 318248 + 18248 8707 Oct 2025 Norman Luhn PRP
41 127969 + 7969 8600 Oct 2025 Norman Luhn PRP
42 395390 + 5390 8576 Nov 2025 Norman Luhn PRP
43 255538 + 5538 7742 Oct 2025 Norman Luhn PRP
44 412793 + 12793 7703 Feb 2020 Jinyuan Wang PRP
45 18392228 + 2228 7274 Jun 2026 Jiahao He PRP
46 78578 + 8578 7250 Oct 2025 Anonymous PRP
47 444325 + 4325 7108 Nov 2025 Norman Luhn PRP
48 633716 + 3716 6687 Jun 2026 Vincent Gautier PRP
49 453878 + 3878 6412 Nov 2025 Norman Luhn PRP
50 383789 + 3789 5986 Nov 2025 Norman Luhn PRP
51 57954 + 7954 5560 Aug 2023 Anonymous Prime
52 203891 + 3891 5063 Oct 2025 Anonymous PRP
53 184015 + 4015 5040 Oct 2025 Norman Luhn PRP
54 333100 + 3100 4708 Oct 2025 Norman Luhn PRP
55 233100 + 3100 4222 Oct 2025 Norman Luhn PRP
56 211795 + 11795 3551 May 2017 Edwin Hall Prime
57 282253 + 2253 3261 Oct 2025 Norman Luhn Prime
58 64027 + 4027 3134 Sep 2012 Bruno Berselli Prime
59 282133 + 2133 3087 Oct 2025 Norman Luhn Prime
60 631658 + 1658 2984 Jun 2026 Vincent Gautier Prime
61 63793 + 3793 2952 Sep 2012 Vincenzo Librandi Prime
62 1839902 + 902 2945 Jun 2026 Jiahao He Prime
63 242075 + 2075 2864 Dec 2023 Anonymous Prime
64 381739 + 1739 2748 Dec 2020 Masaki UKAI Prime
65 171960 + 1960 2412 Dec 2020 Masaki UKAI Prime
66 461353 + 1353 2250 Nov 2025 Norman Luhn Prime
67 231588 + 1588 2163 Dec 2020 Masaki UKAI Prime
68 651126 + 1126 2042 Jun 2026 Vincent Gautier Prime
69 281279 + 1279 1851 Oct 2025 Norman Luhn Prime
70 261283 + 1283 1816 Oct 2025 Norman Luhn Prime
71 64745 + 745 1346 Jan 2023 Anonymous Prime
72 171080 + 1080 1329 Aug 2017 Nathan Pakaran Prime
73 36715 + 715 1113 Nov 2025 Norman Luhn Prime
74 61357 + 1357 1056 Jul 2018 Ben Chaffin Prime