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==Purpose== | ==Purpose== | ||
| − | + | [[PrimeGrid 321 Prime Search]] is an extension of [[Paul Underwood]]’s [[321 Search]] since 2008. | |
| + | |||
| + | PrimeGrid has added the {{Kbn|+|3|n}} form to the search and will be testing both {{Kbn|3|n}} and {{Kbn|+|3|n}} forms beyond {{Vn}}=5000000. | ||
==Status== | ==Status== | ||
| − | *[https://www.primegrid.com/stats_321_llr.php 321 | + | *The current {{Vn}}<sub>max</sub> = {{Num|{{Multi Reservation:22-NMax}}}} as of {{Multi Reservation:22-Date}} (see [[Multi Reservation:22|Multi Reservation 22]]). |
| − | * | + | *[https://www.primegrid.com/stats_321_llr.php 321 Prime Search status] at [[PrimeGrid]] |
| + | |||
| + | ==Primes found== | ||
| + | *2023-07-06: {{NRi|3|20928756}}, [[Arno Lehmann]] | ||
| + | *2022-03-24: {{NRi|3|18924988}}, [[Frank Matillek]] ([https://www.primegrid.com/download/321-18924988.pdf Official announcement]) | ||
| + | *2022-01-18: {{NRi|3|18196595}}, (Anonymous) ([https://www.primegrid.com/download/321-18196595.pdf Official announcement]) | ||
| + | *2021-09-06: {{NRi|3|17748034}}, [[Marc Wiseler]] ([https://www.primegrid.com/download/321-17748034.pdf Official announcement]) | ||
| + | *2021-01-20: {{NRi|3|16819291}}, [[Rudi Tapper]] ([https://www.primegrid.com/download/321-16819291.pdf Official announcement]) | ||
| + | *2020-10-25: {{NPr|3|16408818}}, [[James Scott Brown]] ([https://www.primegrid.com/download/321-16408818.pdf Official announcement]) | ||
| + | *2015-06-23: {{NRi|3|11895718}}, [[Michael Schulz]] ([https://www.primegrid.com/download/321-11895718.pdf Official announcement]) | ||
| + | *2015-03-13: {{NRi|3|11731850}}, [[Karsten Klopffleisch]] ([https://www.primegrid.com/download/321-11731850.pdf Official announcement]) | ||
| + | *2014-11-22: {{NRi|3|11484018}}, [[Serhiy Gushchak]] ([https://www.primegrid.com/download/321-11484018.pdf Official announcement]) | ||
| + | *2012-01-14: {{NPr|3|10829346}}, [[Sai Yik Tang]] ([https://www.primegrid.com/download/321-10829346.pdf Official announcement]) | ||
| + | *2011-02-21: {{NPr|3|7033641}}, [[Michael Herder]] ([https://www.primegrid.com/download/321-7033641.pdf Official announcement]) | ||
| + | *2010-04-24: {{NRi|3|6090515}}, [[David Mumper]] ([https://www.primegrid.com/download/321-6090515.pdf Official announcement]) | ||
| + | *2009-04-03: {{NPr|3|5082306}}, [[Andy Brady]] ([https://www.primegrid.com/download/321-5082306.pdf Official announcement]) | ||
| + | *2008-08-11: {{NPr|3|2291610}}, [[Thomas Wolfram]] ([https://www.primegrid.com/download/321-2291610.pdf Official announcement]) | ||
| + | *2008-03-23: {{NRi|3|4235414}}, [[Dylan Bennett]] ([https://www.primegrid.com/download/321-4235414.pdf Official announcement]) | ||
| + | '''Total:''' 15 primes found | ||
==History== | ==History== | ||
| + | *[https://www.primegrid.com/forum_thread.php?id=5210 Milestones] | ||
==See also== | ==See also== | ||
| + | *[[321 Search]] | ||
==External links== | ==External links== | ||
*[https://www.primegrid.com/forum_forum.php?id=25 321 Prime Search - PrimeGrid forums] | *[https://www.primegrid.com/forum_forum.php?id=25 321 Prime Search - PrimeGrid forums] | ||
| + | *[https://www.mersenneforum.org/forumdisplay.php?f=14 History of 321 Search] at [[MersenneForum]] | ||
| + | *[https://www.mersenneforum.org/321search/index.html Overview at 321 Search] at [[MersenneForum]] | ||
| + | {{Navbox PrimeGrid}} | ||
[[Category:PrimeGrid 321 Prime Search| ]] | [[Category:PrimeGrid 321 Prime Search| ]] | ||
Latest revision as of 08:20, 7 July 2023
Purpose
PrimeGrid 321 Prime Search is an extension of Paul Underwood’s 321 Search since 2008.
PrimeGrid has added the 3•2n+1 form to the search and will be testing both 3•2n-1 and 3•2n+1 forms beyond n=5000000.
Status
- The current nmax = 21,484,280 as of 2024-04-15 (see Multi Reservation 22).
- 321 Prime Search status at PrimeGrid
Primes found
- 2023-07-06: Riesel 3•220928756-1, Arno Lehmann
- 2022-03-24: Riesel 3•218924988-1, Frank Matillek (Official announcement)
- 2022-01-18: Riesel 3•218196595-1, (Anonymous) (Official announcement)
- 2021-09-06: Riesel 3•217748034-1, Marc Wiseler (Official announcement)
- 2021-01-20: Riesel 3•216819291-1, Rudi Tapper (Official announcement)
- 2020-10-25: Proth 3•216408818+1, James Scott Brown (Official announcement)
- 2015-06-23: Riesel 3•211895718-1, Michael Schulz (Official announcement)
- 2015-03-13: Riesel 3•211731850-1, Karsten Klopffleisch (Official announcement)
- 2014-11-22: Riesel 3•211484018-1, Serhiy Gushchak (Official announcement)
- 2012-01-14: Proth 3•210829346+1, Sai Yik Tang (Official announcement)
- 2011-02-21: Proth 3•27033641+1, Michael Herder (Official announcement)
- 2010-04-24: Riesel 3•26090515-1, David Mumper (Official announcement)
- 2009-04-03: Proth 3•25082306+1, Andy Brady (Official announcement)
- 2008-08-11: Proth 3•22291610+1, Thomas Wolfram (Official announcement)
- 2008-03-23: Riesel 3•24235414-1, Dylan Bennett (Official announcement)
Total: 15 primes found
History
See also
External links
- 321 Prime Search - PrimeGrid forums
- History of 321 Search at MersenneForum
- Overview at 321 Search at MersenneForum
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