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2023-05-13, 02:39
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#1 |
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Nov 2020
3·5 Posts |
Primes of the form 2401*2^n+1
I'm planning on searching k=2401 up to 3 million. I have a feeling that this base is slightly lucky due to 2401 = 7*7*7*7.
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2023-05-13, 03:17
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#2 |
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Nov 2020
3·5 Posts |
I realized that PrimeGrid is already doing all the k's from 1 to 10000 so k=2401 is already taken. Maybe I'll do k = 1234321 instead?
Last fiddled with by YaoPlaysMC on 2023-05-13 at 03:23 |
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2023-05-13, 16:26
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#3 |
"Norman Luhn"
Jan 2007
Germany
2×32×43 Posts |
For open k's,you can take a look here
 https://pzktupel.de/Primetables/TableProthTOP10KK.php Line 3446 is listed a k=2401. This top-10000 starts with numbers >308000 digits. Last fiddled with by Cybertronic on 2023-05-13 at 16:28 |
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2023-07-02, 03:22
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#4 | |
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Random Account
Aug 2009
Oceanus Procellarum
5×607 Posts |
Quote:
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2023-07-08, 12:34
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#5 |
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Dec 2022
2×3×7×13 Posts |
Of course all the specific numbers on the list have been tested and shown prime. An 'open' range is one that has not been tested, and PrimeGrid is indeed testing all k < 10,000 , and recording the primes found, so it would likely be inadvisable to search there.
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