49768M

49768M is a methuselah with a lifespan of 49768 generations, discovered by Rob Liston on April 21, 2020, using apgsearch.[1] On April 24, Goldtiger997 found a variant of this methuselah which lasts one generation longer while still fitting within the same bounding box, which is currently the longest-lasting known non-infinitely-growing[note 1] methuselah within a 16×16 square.[5] Both of these surpass 47575M which was discovered in February 2019.

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49769M (click above to open LifeViewer)
RLE: here Plaintext: here
49768M
<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html>x = 16, y = 16, rule = B3/S23 b6o2bo2b2obo$2obobo2b2o2bo$5bo5bo2b2o$bo2bob3o2b5o$2o2b6o4bo$o3bob5obo bo$2ob2o3bo4bobo$3bo5bobob3o$5obob2obobobo$o8b2ob2obo$bo2bo4bo3bobo$2o 3b2o4bo2bo$ob2o6bo2bobo$5bobo4b2obo$3ob3o8bo$obobo3b3ob3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] <nowiki>#C [[ ZOOM 16 THUMBSIZE 2 WIDTH 480 HEIGHT 480 ]]</nowiki> <html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html> File:49768m.png <html></noscript></canvas></div></html>
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Pattern type Methuselah
Number of cells 117
Bounding box 16×16
MCPS 124
Lifespan 49768 generations
Final population 4333
L/I 425.4
F/I 37
F/L 0.087
L/MCPS 401.4
Discovered by Rob Liston
Year of discovery 2020

Stable pattern

The stable pattern that results from 49768M (excluding 97 escaping gliders) has 3848 cells and consists of 317 blocks, 261 blinkers (including 16 traffic lights and two interchanges), 145 beehives (including three honey farms), 59 boats, 52 loaves, 15 tubs, 12 ponds, 11 ships, two toads, one barge, and one long boat.

gollark: Precisely.
gollark: <@319753218592866315> You can't VERIFY it though.
gollark: I should draw up my own manifestö.
gollark: ++delete <@!529362061658947584> (I bet you haven't even read the antimemetics division)
gollark: ++delete <@!529362061658947584> (do you even know SCP lore)

See also

Notes
  1. An infinitely growing soup which "goes boring" after 133100 generations due to a backwards-firing stream of gliders was found by Rob Liston on May 12, 2019;[2] however, this is often not counted as a methuselah.[3] Another soup, based on a crystal reaction, was found by Liston on May 29, 2020 lasting 10,514,926 generations.[4]

References
  1. Ian07 (April 23, 2020). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  2. Oscar Cunningham (May 12, 2019). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  3. Dave Greene (May 12, 2019). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  4. Adam P. Goucher (June 17, 2020). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  5. Goldtiger997 (April 24, 2020). Message in #cgol on the Conwaylife Lounge Discord server
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