| All Known AP27 (PrimeGrid) Total: 3 |
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| RANK | AP27 | n's | Digits | When? | Who? |
| 1 | (2712706938 + 155368778 • n) • 23# + 50516201 | 0..26 | 19 | 10 Dec 2023 | Michael Kwok |
| 2 | (1244769928 + 170826477 • n) • 23# + 214381471 | 0..26 | 19 | 26 May 2023 | Tom Greer |
| 3 (1st known) |
(1006686614 + 81292139 • n) • 23# + 31695731 | 0..26 | 18 | 23 Sep 2019 | Rob Gahan |