| 2260343 | Composite, with 4 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| P-1 factors | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 137 / 640 |
Estimated T-Level: 26.1 ⓘ TF below 2^82 is very unlikely to find new factors due to ECM effort. |
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2017-10-10 | Oliver Kruse | C48533C29AEDB8DF | 1 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2017-10-18 | Oliver Kruse | F0DD79D59EA94A96 | 3 | 1213911 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-11-21 | storm5510 | F0DD79D59EA94A96 | 3 | 1744103 | 5 | 3 | | Verified | Certified Good | 2025-09-24 | Oliver Kruse | F0DD79D59EA94A96 | 4 | 104566 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-09-24 | almitydave | CERT | Proof certified good | | 2025-09-24 | Oliver Kruse | C-PRP | M2260343/4520687/48407505689/9942802415426229770634959/297360707772373584807598861879589249 : F0DD79D59EA94A96 Proof Certified Good
Proof Power: 7
| | 2025-09-19 | TJAOI | F-ECM | Factor: 9942802415426229770634959 / ECM curve 22, B1=250000, B2=252249855, Edwards Sigma=927837932125258 | | 2017-11-21 | storm5510 | C-PRP | M2260343/4520687/48407505689/297360707772373584807598861879589249 : F0DD79D59EA94A96 | | 2017-10-18 | Oliver Kruse | C-PRP | M2260343/4520687/48407505689/297360707772373584807598861879589249 : F0DD79D59EA94A96 Proof Certified Good
Proof Power: 7
| | 2017-10-10 | Oliver Kruse | C-PRP | M2260343/known_factors : C48533C29AEDB8DF | | 2016-04-16 | alpertron | F-PM1 | Factor: 297360707772373584807598861879589249 / B1=500000, B2=15000000 | | 2008-07-14 | George Woltman | F-ECM | Factor: 48407505689 |
|
