| 2117653 | Composite, with 4 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 164 / 640 |
Estimated T-Level: 26.3 ⓘ TF below 2^82 is very unlikely to find new factors due to ECM effort. |
| PRP | | Status | Proof | Date | User | Residue | Shift | Type | Base |
|---|
| Factored | Certified Good Power=7 | 2026-09-16 | Jason Lynch | AFFCEAB7791D2E67 | 1387390 | 1 | 3 |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2017-10-07 | Oliver Kruse | D9B618D6B8C584C0 | 1 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2017-10-17 | Oliver Kruse | AFFCEAB7791D2E67 | 3 | 679832 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-11-17 | kkmrkkblmbrbk | AFFCEAB7791D2E67 | 3 | 818356 | 5 | 3 | | Verified | Certified Good | 2024-08-18 | Naegi Makoto | AFFCEAB7791D2E67 | 4 | 1440999 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2026-09-16 | ANONYMOUS | CERT | Proof certified good | | 2026-09-16 | Jason Lynch | C-PRP | AFFCEAB7791D2E67
Proof Certified Good
Proof Power: 7
| | 2024-08-18 | Luke Durant | CERT | Proof certified good | | 2024-08-18 | Naegi Makoto | C-PRP | M2117653/734628882212831/4960598815078873/34199450010776023/264655737140168567389921 : AFFCEAB7791D2E67
Proof Certified Good
Proof Power: 7
| | 2024-08-16 | TJAOI | F-ECM | Factor: 264655737140168567389921 / ECM curve 54, B1=250000, B2=264647565, Edwards Sigma=3381479010149459 | | 2017-11-17 | kkmrkkblmbrbk | C-PRP | M2117653/734628882212831/4960598815078873/34199450010776023 : AFFCEAB7791D2E67 | | 2017-10-17 | Oliver Kruse | C-PRP | M2117653/734628882212831/4960598815078873/34199450010776023 : AFFCEAB7791D2E67 | | 2017-10-07 | Oliver Kruse | C-PRP | M2117653/734628882212831/4960598815078873/34199450010776023 : D9B618D6B8C584C0 | | 2016-03-26 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2014-12-25 | TJAOI | F | Factor: 34199450010776023 | | 2014-07-30 | TJAOI | F | Factor: 4960598815078873 |
|
