| 2353369 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 118 / 640 |
Estimated T-Level: 25.9 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Peter Doherty | 621848F3F4A05147 | 0 | Windows,Prime95,v13,(aka WP1) | | Factored | | Doug Fortune | 621848F3F4A05147 | 0 | Linux 32-bit,Prime95,v13,(aka WP2) | | Factored | 1999-03-01 | Arno Zweers | 621848F3F4A05147 | 231802 | Windows,Prime95,v17,(aka WT1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-12 | Oliver Kruse | D5E03822D5BE25E1 | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-11-24 | storm5510 | D5E03822D5BE25E1 | 1 | 705654 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2018-04-27 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-11-24 | storm5510 | C-PRP | M2353369/2725564401846138093599 : D5E03822D5BE25E1 | | 2017-10-12 | Oliver Kruse | C-PRP | M2353369/2725564401846138093599 : D5E03822D5BE25E1 | | 2017-10-07 | bam | F-ECM | Factor: 2725564401846138093599 | | 2017-06-10 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 1-60 | | 2015-10-27 | ramgeis | NF | no factor TF: 65-66 | | 2015-03-06 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-03-06 | VictordeHollander | NF | no factor TF: 63-64 | | 2013-12-04 | c10ck3r | NF-PM1 | B1=500000, B2=10000000, E=12 | | 2013-01-23 | dbaugh | NF | no factor TF: 62-63 | | 2012-05-29 | Sebastian Hornbostel | NF | no factor TF: 61-62 | | 2011-01-22 | Oscar Östlin | NF-PM1 | B1=90000, B2=1822500, E=6 | | 2010-12-04 | Oscar Östlin | NF-PM1 | B1=75011 | | 2010-11-03 | Joss | NF-PM1 | B1=20000 | | 2009-01-15 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-09-21 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-03-01 | BotXXX | C-LL | 621848F3F4A05147 |
|
