List of long-lived methuselahs

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This is a list of notable methuselahs by lifespan in Conway's Game of Life. This list may change as new methuselahs are discovered.

Lifespan (L) Pattern Bounding box MCPS Initial population (I) Final population (F) L/I F/I F/L L/MCPS
49769 49769M[1] 16×16 112 109 4333 456.6 39.8 0.086 444.4
49768 49768M[2] 16×16 124 117 4333 425.4 37.0 0.087 401.4
47575 47575M[3] 16×16 132 131 4054 363.2 30.9 0.085 360.4
47487 47487M 17×22 37 16 4054 2967.9 253.4 0.085 1283.4
42883 Homer[4] 16×16 131 129 4333 332.4 33.6 0.101 327.4
42100 42100M[5] 16×16 135 130 4884 323.8 37.6 0.116 311.9
40514 40514M 78×54 104 18 3735 2250.8 207.5 0.092 389.6
39693 Wilma[6] 20×20 201 197 3524 201.5 17.9 0.089 197.5
35426 Fred 20×20 164 150 2924 236.2 19.5 0.083 216.0
35201 35201M 20×20 188 183 5828 192.4 31.8 0.166 187.2
35161 35161M 32×28 66 30 5823 1172.0 194.1 0.166 532.7
32829 32829M[7] 31×23 47 15 3413 2188.6 227.5 0.104 698.5
31192 Edna (original variant) 20×20 157 149 3602 209.3 24.2 0.115 198.7
31082 Edna (26-cell variant) 43×26 73 26 3602 1195.4 138.5 0.116 425.8
30872 Ed 20×20 163 151 2833 204.5 18.8 0.092 189.4
30046 Eve 16×10 26 20 3026 1502.3 151.3 0.101 1155.6
29126 Lidka predecessor[8] 9×6 15 13 1623 2240.5 124.8 0.056 1941.7
29055 Lidka (Bell's grandparent) 9×15 21 13 1623 2235.0 124.8 0.056 1383.6
29053 Lidka (original) 9×15 21 13 1623 2234.8 124.8 0.056 1383.5
28786 Iwona 20×21 42 19 3091 1515.1 162.7 0.107 685.4
27732 27732M[9] 12×3 20 18 2923 1540.7 162.4 0.105 1386.6
27406 27406M[10] 6×6 20 20 2276 1370.3 113.8 0.083 1370.3
26659 26659M[10] 8×5 17 16 3496 1666.2 218.5 0.131 1568.2
26458 Justyna 22×17 40 20 3548 1322.9 177.4 0.134 661.5
25567 25567M[11] 6×6 18 18 2774 1420.4 154.1 0.108 1420.4
25415 25415M[10] 11×3 23 23 2012 1105 87.5 0.079 1105
25306 25306M[11] 10×4 17 14 3274 1807.6 233.9 0.129 1488.6
24827 24827M[12] 8×7 16 13 5151 1909.8 396.2 0.207 1551.7
23662 23662M[13][note 1] 16×2 21 20 2611 1183.1 130.5 0.110 1126.8
23354 Blom (23354 generation variant)[14] 7×6 17 14 2740 1668.1 195.7 0.117 1373.8
23349 Blom predecessor[15] 6×6 18 16 2740 1459.3 171.3 0.117 1297.2
23334 23334M (11-cell equivalent)[16] 5×8 14 11 2898 2121.3 263.5 0.124 1666.7
23334 23334M 5×8 14 12 2898 1944.5 241.5 0.124 1666.7
23317 Blom (15×2 variant)[13] 15×2 19 18 2740 1295.4 152.2 0.118 1227.2
23315 Blom (12-cell variant)[14] 13×4 16 12 2740 1942.9 228.3 0.118 1457.2
23314 Blom 12×5 17 13 2740 1793.4 210.8 0.118 1371.4
23313 Blom (11×3 variant)[14] 11×3 15 13 2740 1793.3 210.8 0.118 1554.2
18034 18034M[16] 5×8 13 11 2305 1639.5 209.5 0.128 1387.2
17778 17778M[17] 7×7 15 12 2385 1481.5 198.8 0.134 1185.2
17670 Bunnies variant[15] 6×6 18 16 1753 1104.4 109.6 0.099 981.7
17465 Bunnies 11 6×4 12 11 1749 1587.7 159.0 0.100 1455.4
17431 Bunnies 10b 9×6 12 11 1744 1743.1 174.4 0.100 1584.6
17425 Bunnies 10a 7×5 12 10 1744 1742.5 174.4 0.100 1452.1
17423 Bunnies 10 6×6 12 10 1749 1742.3 174.9 0.100 1451.9
17410 Bunnies 9 8×7 12 9 1744 1934.4 193.8 0.100 1450.8
17332 Bunnies 8×4 11 9 1744 1925.8 193.8 0.101 1575.6
17331 Rabbits 7×3 10 9 1744 1925.7 193.8 0.101 1733.1
14911 14911M[13][note 2] 38×1 38 27 3554 552.3 131.6 0.238 392.4
7468 7468M 6×4 9 8 952 933.5 119.0 0.127 829.8
6929 Jaydot 3×6 10 9 1124 769.9 124.9 0.162 692.9
5206 Acorn 7×3 8 7 633 743.7 90.4 0.122 650.8
3933 Multum in parvo 6×4 7 7 633 561.9 90.4 0.161 561.9
3911 Switch engine 6×4 10 8 842 488.9 105.3 0.215 391.1
1108 R-pentomino relatives 6×3 7 6 116 184.7 19.3 0.105 158.3
1105 R-pentomino grandparents 4×3, 3×4, 4×4 5 5 116 221.0 23.2 0.105 221
1103 R-pentomino 3×3 5 5 116 220.6 23.2 0.105 220.6
530 Two-glider mess 6×6 11 10 72 53 7.2 0.136 48.2
437 F-heptomino 4×4 7 7 60 62.4 8.6 0.137 62.4
343 E-heptomino 4×3 7 7 51 49.0 7.3 0.149 49.0
243 Thunderbird 3×5 7 6 46 40.5 7.7 0.189 34.7
191 Queen bee 7×5 12 12 30 15.9 2.5 0.157 15.9
184 Gliders by the dozen (predecessor) 5×3 9 8 124 23 15.5 0.674 20.4
177 Gliders by the dozen (original form) 9×5 21 20 124 8.9 6.2 0.701 8.4
173 Pi-heptomino 3×3 7 7 55 24.7 7.9 0.318 24.7
148 B-heptomino 4×3 7 7 26 21.1 3.7 0.176 21.1
148 C-heptomino 4×3 7 7 26 21.1 3.7 0.176 21.1
131 Herschel great-grandparent 7×5 20 19 22 6.9 1.2 0.168 6.6
130 Herschel grandparent 5×4 8 7 22 18.6 3.1 0.169 16.3
130 Die hard 8×3 11 7 0 18.6 0 0 11.8
129 Herschel parent 5×4 7 6 22 21.5 3.7 0.171 18.4
128 Herschel 3×4 7 7 22 18.3 3.1 0.172 18.3
106 Block and glider 4×3 6 6 9 17.7 1.5 0.085 17.7
103 Century 4×3 6 6 15 17.2 2.5 0.146 17.2

See also

Notes

  1. ↑ The longest-lasting methuselah not exceeding a 16×2 bounding box.
  2. ↑ The longest-lasting methuselah not exceeding a 40×1 bounding box.

References

  1. ↑ Goldtiger997 (April 24, 2020). Message in #cgol on the Conwaylife Lounge Discord server
  2. ↑ Ian07 (April 23, 2020). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  3. ↑ Ian07 (February 10, 2019). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  4. ↑ Adam P. Goucher (November 30, 2018). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  5. ↑ Ian07 (October 31, 2018). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  6. ↑ Rob Liston (October 28th, 2018). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  7. ↑ Matthias Merzenich (October 10th, 2010). Re: The Online Life-Like CA Soup Search (discussion thread) at the ConwayLife.com forums
  8. ↑ Simon Ekström (March 8, 2017). Re: Long-lived methuselahs (discussion thread) at the ConwayLife.com forums
  9. ↑ Simon Ekström (July 20, 2017). Re: Long-lived methuselahs (discussion thread) at the ConwayLife.com forums
  10. ↑ 10.0 10.1 10.2 Simon Ekström (April 10, 2017). Re: Long-lived methuselahs (discussion thread) at the ConwayLife.com forums
  11. ↑ 11.0 11.1 Simon Ekström (March 23, 2017). Re: Long-lived methuselahs (discussion thread) at the ConwayLife.com forums
  12. ↑ Simon Ekström (March 10, 2017). Re: Long-lived methuselahs (discussion thread) at the ConwayLife.com forums
  13. ↑ 13.0 13.1 13.2 Simon Ekström (April 3, 2017). Re: Long-lived methuselahs (discussion thread) at the ConwayLife.com forums
  14. ↑ 14.0 14.1 14.2 Simon Ekström (March 5, 2017). Re: Long-lived methuselahs (discussion thread) at the ConwayLife.com forums
  15. ↑ 15.0 15.1 Simon Ekström (March 16, 2017). Re: Long-lived methuselahs (discussion thread) at the ConwayLife.com forums
  16. ↑ 16.0 16.1 Simon Ekström (May 13, 2016). Re: Thread for your unsure discoveries (discussion thread) at the ConwayLife.com forums
  17. ↑ Simon Ekström (February 22, 2017). Re: Long-lived methuselahs (discussion thread) at the ConwayLife.com forums

External links

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