| 5923 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 244 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 640 / 640 | | 35 | 1000000 | 1566 / 1566 | | 40 | 3000000 | 4588 / 4588 | | 45 | 11000000 | 9201 / 9201 | | 50 | 44000000 | 10409 / 16550 |
Estimated T-Level: 48.1 ⓘ TF below 2^155 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Unknown | 1D8E | 0 | Unknown,(aka U) | | Factored | | George Woltman | 02923F2BC99E1D8E | 0 | Woltman,Prime95,first web release,(aka W4) | | Factored | | Brian J. Beesley | 02923F2BC99E1D8E | 0 | Mac,John Sweeney,v1.4,(aka J3) | | Factored | 2015-04-11 | MadPoo 🙂 | 02923F2BC99E1D8E | 2473 | Windows 64-bit,Prime95,v26,(aka We4) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | No proof (small exponent) | 2017-09-21 | Oliver Kruse | 4F330A95867A2241 | 1 | 0 | 1 | 3 | | Verified | No proof (small exponent) | 2017-10-02 | kkmrkkblmbrbk | 4F330A95867A2241 | 1 | 0 | 1 | 3 | | Verified | No proof (small exponent) | 2017-12-07 | ATH | 4F330A95867A2241 | 1 | 729 | 1 | 3 | | Verified | No proof (small exponent) | 2020-04-17 | Oliver Kruse | 43455F6E38DA8675 | 1 | 1563 | 5 | 3 | | Verified | No proof (small exponent) | 2024-02-03 | Wentao Huang | 43455F6E38DA8675 | 1 | 5192 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-05-25 | masser | NF-PP1 | Start=125/53, B1=1500000000, B2=1498500000000 | | 2024-02-03 | Wentao Huang | C-PRP | M5923/39615112643045557727531880705107806493554991 : 43455F6E38DA8675 | | 2023-07-24 | -anonymous- | NF-PM1 | B1=42000000000, B2=171618195782983950 | | 2020-04-17 | Oliver Kruse | C-PRP | M5923/39615112643045557727531880705107806493554991 : 43455F6E38DA8675 | | 2017-12-07 | ATH | C-PRP | M5923/39615112643045557727531880705107806493554991 : 4F330A95867A2241 | | 2017-10-02 | kkmrkkblmbrbk | C-PRP | M5923/39615112643045557727531880705107806493554991 : 4F330A95867A2241 | | 2017-09-21 | Oliver Kruse | C-PRP | M5923/known_factors : 4F330A95867A2241 | | 2016-06-11 | Carsten Kossendey | F-ECM | Factor: 39615112643045557727531880705107806493554991 | | 2016-02-23 | LaurV | NF | no factor TF: 57-58 | | 2015-08-12 | Sid & Andy | NF | no factor TF: 61-62 | | 2015-05-20 | MadPoo 🙂 | NF-PM1 | B1=100000000000 | | 2015-04-11 | MadPoo 🙂 | C-LL | 02923F2BC99E1D8E | | 2012-10-11 | bcp19 | NF | no factor TF: 60-61 | | 2011-05-09 | Joss | NF-PM1 | B1=10000000000 | | 2011-01-04 | monst | NF | no factor TF: 58-60 | | 2003-01-25 | -anonymous- | NF-PM1 | B1=4290000000 | | 2002-12-31 | -anonymous- | NF | no factor TF: 1-57 | | 2002-09-29 | -anonymous- | NF-PM1 | B1=3221225472, B2=4290000000, E=48 | | 2002-08-17 | -anonymous- | NF-PM1 | B1=2147483648, B2=4290000000, E=48 | | 2002-06-02 | -anonymous- | NF-PM1 | B1=1073741824, B2=4290000000, E=48 | | 2001-08-04 | -anonymous- | NF-PM1 | B1=3000000000, B2=4290000000 | | 2001-06-17 | -anonymous- | NF-PM1 | B1=43000000, B2=4290000000 | | 2001-02-11 | -anonymous- | NF-PM1 | B1=1000000, B2=100000000 | | 2000-08-01 | -anonymous- | NF | no factor TF: 1-56 | | 2000-02-23 | -anonymous- | NF | no factor TF: 54-55 | | 1999-12-30 | -anonymous- | NF | no factor TF: 53-54 | | 1999-09-22 | -anonymous- | NF | no factor TF: 52-53 |
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