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Term: bn + n { not listed here n < b where bn < 101000 } Exhaustive-search-table Total: 107 PRP: 37 Prime: 70 References: Dual Cullen on Mersenneforum, PRP Top-10000 by Lifchitz get informations as a txt-format |
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| 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 | 2678561 + 678561 | 204268 | May 2006 | Henri Lifchitz | PRP |
| 7 | 5385114 + 85114 | 146761 | May 2022 | Kellen Shenton | PRP |
| 8 | 7975948 + 75948 | 144121 | Jun 2023 | Kellen Shenton | PRP |
| 9 | 1957910 + 57910 | 74053 | May 2022 | Kellen Shenton | PRP |
| 10 | 685481 + 85481 | 66518 | Aug 2014 | Henri Lifchitz | PRP |
| 11 | 4108889 + 108889 | 65558 | Mar 2024 | Hugo Pfoertner | PRP |
| 12 | 2204129 + 204129 | 61449 | Apr 2002 | Henri Lifchitz | PRP |
| 13 | 6129226 + 29226 | 52179 | Jun 2023 | Kellen Shenton | PRP |
| 14 | 288071 + 88071 | 26513 | Sep 2001 | Henri Lifchitz | Prime |
| 15 | 1023769 + 23769 | 23770 | Oct 2001 | Milton L. Brown | Prime |
| 16 | 533054 + 33054 | 23104 | Jul 2025 | Anonymous | PRP |
| 17 | 718960 + 18960 | 16024 | Mar 2024 | Anonymous | PRP |
| 18 | 459424 + 9424 | 15580 | Nov 2025 | Norman Luhn | PRP |
| 19 | 522102 + 22102 | 15449 | May 2025 | Anonymous | PRP |
| 20 | 468923 + 8923 | 14837 | Nov 2025 | Norman Luhn | PRP |
| 21 | 1013807 + 13807 | 13808 | Jul 2001 | Milton L. Brown | Prime |
| 22 | 297942 + 7942 | 11615 | Oct 2025 | Norman Luhn | PRP |
| 23 | 516176 + 6176 | 10546 | Nov 2025 | Norman Luhn | PRP |
| 24 | 187541 + 7541 | 9467 | Oct 2025 | Norman Luhn | PRP |
| 25 | 99602 + 9602 | 9163 | Oct 2025 | Norman Luhn | PRP |
| 26 | 318248 + 18248 | 8707 | Oct 2025 | Norman Luhn | PRP |
| 27 | 127969 + 7969 | 8600 | Oct 2025 | Norman Luhn | PRP |
| 28 | 395390 + 5390 | 8576 | Nov 2025 | Norman Luhn | PRP |
| 29 | 255538 + 5538 | 7742 | Oct 2025 | Norman Luhn | PRP |
| 30 | 412793 + 12793 | 7703 | Feb 2020 | Jinyuan Wang | PRP |
| 31 | 78578 + 8578 | 7250 | Oct 2025 | Anonymous | PRP |
| 32 | 444325 + 4325 | 7108 | Nov 2025 | Norman Luhn | PRP |
| 33 | 453878 + 3878 | 6412 | Nov 2025 | Norman Luhn | PRP |
| 34 | 383789 + 3789 | 5986 | Nov 2025 | Norman Luhn | PRP |
| 35 | 57954 + 7954 | 5560 | Aug 2023 | Anonymous | Prime |
| 36 | 203891 + 3891 | 5063 | Oct 2025 | Anonymous | PRP |
| 37 | 184015 + 4015 | 5040 | Oct 2025 | Norman Luhn | PRP |
| 38 | 333100 + 3100 | 4708 | Oct 2025 | Norman Luhn | PRP |
| 39 | 233100 + 3100 | 4222 | Oct 2025 | Norman Luhn | PRP |
| 40 | 211795 + 11795 | 3551 | May 2017 | Edwin Hall | Prime |
| 41 | 282253 + 2253 | 3261 | Oct 2025 | Norman Luhn | PRP |
| 42 | 64027 + 4027 | 3134 | Sep 2012 | Bruno Berselli | Prime |
| 43 | 282133 + 2133 | 3087 | Oct 2025 | Norman Luhn | PRP |
| 44 | 63793 + 3793 | 2952 | Sep 2012 | Vincenzo Librandi | Prime |
| 45 | 242075 + 2075 | 2864 | Dec 2023 | Anonymous | Prime |
| 46 | 381739 + 1739 | 2748 | Dec 2020 | Masaki UKAI | Prime |
| 47 | 171960 + 1960 | 2412 | Dec 2020 | Masaki UKAI | Prime |
| 48 | 461353 + 1353 | 2250 | Nov 2025 | Norman Luhn | Prime |
| 49 | 231588 + 1588 | 2163 | Dec 2020 | Masaki UKAI | Prime |
| 50 | 281279 + 1279 | 1851 | Oct 2025 | Norman Luhn | Prime |
| 51 | 261283 + 1283 | 1816 | Oct 2025 | Norman Luhn | Prime |
| 52 | 171080 + 1080 | 1329 | Aug 2017 | Pakaran | Prime |
| 53 | 36715 + 715 | 1113 | Nov 2025 | Norman Luhn | Prime |
| 54 | 61357 + 1357 | 1056 | Jul 2018 | Ben Chaffin | Prime |
| 55 | 23225 + 3225 | 971 | Prime | ||
| 56 | 46583 + 583 | 970 | Prime | ||
| 57 | 23201 + 3201 | 964 | Prime | ||
| 58 | 16793 + 793 | 955 | Prime | ||
| 59 | 34559 + 559 | 857 | Prime | ||
| 60 | 41233 + 1233 | 743 | Prime | ||
| 61 | 31532 + 1532 | 731 | Prime | ||
| 62 | 6761 + 761 | 593 | Prime | ||
| 63 | 21881 + 1881 | 567 | Prime | ||
| 64 | 10451 + 451 | 452 | Prime | ||
| 65 | 22315 + 315 | 423 | Prime | ||
| 66 | 21311 + 1311 | 395 | Prime | ||
| 67 | 40237 + 237 | 380 | Prime | ||
| 68 | 47214 + 214 | 358 | Prime | ||
| 69 | 12319 + 319 | 345 | Prime | ||
| 70 | 14299 + 299 | 343 | Prime | ||
| 71 | 44203 + 203 | 334 | Prime | ||
| 72 | 14279 + 279 | 320 | Prime | ||
| 73 | 10313 + 313 | 314 | Prime | ||
| 74 | 23202 + 202 | 276 | Prime | ||
| 75 | 6305 + 305 | 238 | Prime | ||
| 76 | 2735 + 735 | 222 | Prime | ||
| 77 | 14185 + 185 | 213 | Prime | ||
| 78 | 2701 + 701 | 212 | Prime | ||
| 79 | 20123 + 123 | 161 | Prime | ||
| 80 | 4225 + 225 | 136 | Prime | ||
| 81 | 3071 + 71 | 105 | Prime | ||
| 82 | 2317 + 317 | 96 | Prime | ||
| 83 | 8101 + 101 | 92 | Prime | ||
| 84 | 4133 + 133 | 81 | Prime | ||
| 85 | 2851 + 51 | 74 | Prime | ||
| 86 | 976 + 76 | 73 | Prime | ||
| 87 | 1069 + 69 | 70 | Prime | ||
| 88 | 1354 + 54 | 61 | Prime | ||
| 89 | 1544 + 44 | 52 | Prime | ||
| 90 | 485 + 85 | 52 | Prime | ||
| 91 | 1835 + 35 | 44 | Prime | ||
| 92 | 748 + 48 | 41 | Prime | ||
| 93 | 1235 + 35 | 38 | Prime | ||
| 94 | 1526 + 26 | 31 | Prime | ||
| 95 | 734 + 34 | 29 | Prime | ||
| 96 | 289 + 89 | 27 | Prime | ||
| 97 | 1223 + 23 | 25 | Prime | ||
| 98 | 281 + 81 | 25 | Prime | ||
| 99 | 275 + 75 | 23 | Prime | ||
| 100 | 437 + 37 | 23 | Prime | ||
| 101 | 1417 + 17 | 20 | Prime | ||
| 102 | 334 + 34 | 17 | Prime | ||
| 103 | 239 + 39 | 12 | Prime | ||
| 104 | 215 + 15 | 5 | Prime | ||
| 105 | 29 + 9 | 3 | Prime | ||
| 106 | 25 + 5 | 2 | Prime | ||
| 107 | 23 + 3 | 2 | Prime |