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Forum: Factoring 2021-05-05, 18:29
Replies: 35
Views: 8,209
Posted By swishzzz
2^339 ± c completed: 2^339 - 27235 = ...

2^339 ± c completed:


2^339 - 27235 =
967306904908920452789078319450002924493095732788319 *
1157721882688666313356029082874219101278312435085187
Forum: Factoring 2021-04-24, 23:21
Replies: 35
Views: 8,209
Posted By swishzzz
smallest 340 bit brilliant number

Test run of Amazon EC2 free tier. A 103 digit snfs job with factmsieve.py takes around 2.5 hours on a single t2 micro Windows instance running at 10% CPU capacity, perhaps this will be faster on a...
Forum: Factoring 2021-02-26, 19:55
Replies: 35
Views: 8,209
Posted By swishzzz
base 2 brilliant numbers

A couple more found by Branger on 2020/12/30 which I don't have proof files for that are not listed on https://www.alpertron.com.ar/BRILLIANT2.HTM#twobr:
Forum: Factoring 2021-01-11, 00:34
Replies: 35
Views: 8,209
Posted By swishzzz
Adding 2^309±c to the above: 2^309-31899...

Adding 2^309±c to the above:


2^309-31899 =
24781986941524378779451719636879394253653915667 *
42085504376393744737222716439904864143412540839

2^309+19499 =...
Forum: Factoring 2021-01-04, 05:45
Replies: 35
Views: 8,209
Posted By swishzzz
base 2 brilliant numbers

All found before November 2018.


2^305 + 47261 =
7316490771476709190807652965574102572379302277 *
8909346472058358236842543861359565227710116409

2^307 - 19027 =...
Forum: Factoring 2020-12-30, 21:24
Replies: 35
Views: 8,209
Posted By swishzzz
I have a Python web scraper that I use to check...

I have a Python web scraper that I use to check entries of the form n + c for varying c on factordb, though even filtering out composites which do not have a prime factor below 20M still generates...
Forum: Factoring 2020-12-21, 02:25
Replies: 35
Views: 8,209
Posted By swishzzz
Apparently someone had already found this factor...

Apparently someone had already found this factor as the entry shows up on factordb.com and was created some time before November 2018. A google search of either factor gives nothing.

Sieving of...
Forum: Factoring 2020-11-02, 14:02
Replies: 35
Views: 8,209
Posted By swishzzz
Remaining base 2 brilliant numbers below 2^300: ...

Remaining base 2 brilliant numbers below 2^300:


2^295 - 13429 =
198510202319234021827282742860868097914815709 *
320675579978917834648228904658346016622753671

2^295 + 175343 =...
Forum: Factoring 2020-10-31, 18:20
Replies: 35
Views: 8,209
Posted By swishzzz
A few more 2-bit brilliant numbers: 2^297...

A few more 2-bit brilliant numbers:


2^297 - 7405 =
465449598594965125759568006862384515773478687 *
547061374229242156241055675491722178284755341

2^297 + 4301 =...
Forum: Factoring 2020-10-25, 03:27
Replies: 35
Views: 8,209
Posted By swishzzz
2^303 - 39727 is the largest 303-bit number that...

2^303 - 39727 is the largest 303-bit number that splits into two 152-bit primes:


p46 factor: 3755140210209107891033403488267039571419053517
p46 factor:...
Forum: Factoring 2020-10-19, 13:53
Replies: 35
Views: 8,209
Posted By swishzzz
10^155+7213 is the smallest 156-digit number that...

10^155+7213 is the smallest 156-digit number that factors into two 78-digit primes:



Factor file for 10^155+c attached.
Forum: Factoring 2020-10-11, 17:56
Replies: 35
Views: 8,209
Posted By swishzzz
10^151+14541 = ...

10^151+14541 =
1892066823280306942402672399836621036921105169101702440417171708556479073929 *
5285225594021482704171643427873368811118569345423620874203438445689349531429

Factors of all...
Forum: Factoring 2020-09-30, 01:16
Replies: 35
Views: 8,209
Posted By swishzzz
Could I reserve 152 digits? I've already begun...

Could I reserve 152 digits? I've already begun sieving and am about 10 SNFS factorizations in.
Showing results 1 to 13 of 13

 
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