52513M

52513M
x = 16, y = 16, rule = B3/S23 3o2b2obob2ob3o$2obob3o4bobo$bo2bo2bobob3obo$2bo2b2o3bo2bo$2bo5bobo3b2o $o4b2o3b3obo$3b2o2bo2bobo2bo$2b4obo2bob2o$2ob2o2b2o5b2o$ob4obo4b3o$o3b 4o2b3o$b10o2b3o$2o3bob3obob3o$b2ob6o3bobo$obo5b4obo$3obobob2o5bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ ZOOM 16 THUMBSIZE 2 WIDTH 480 HEIGHT 480 ]]
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Pattern type	Methuselah
Number of cells	131
Bounding box	16×16
MCPS	135
Lifespan	52513 generations
Final population	5054
L/I	400.9
F/I	38.6
F/L	0.096
L/MCPS	389
Discovered by	Dylan Chen
Year of discovery	2021
Pattern files Plaintext 52513m.cells RLE 52513m.rle

52513M is a methuselah with a lifespan of 52513 generations, discovered by Dylan Chen on January 16, 2021, using apgsearch. It is currently the longest-lasting known non-infinitely-growing methuselah within a 16×16 square, being found just a week after the previous record-holder, 50093M. On January 17, Adam P. Goucher found a 27-cell variant lasting 52444 generations. Other variants have been found by MathAndCode and Tanner Jacobi, including one with only 25 cells, which is shown below.

x = 14, y = 37, rule = B3/S23 6b2o$7bo$4bobo$4bo10$6bobo$7bo$7bo9$10bo$10b2o$9bo3$12b2o$3bo8bo$3bo$ 3bo2$obo$2b2o$3bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]

52446M (click above to open LifeViewer) RLE: here Plaintext: here

Stable pattern

The stable pattern that results from 52513M (excluding 92 escaping gliders) has 4594 cells and consists of 380 blinkers (including 40 traffic lights), 342 blocks, 193 beehives (including eight honey farms), 50 loaves, 46 boats, 19 tubs, 18 ships, nine ponds, five toads, two barges, two separate half-bakeries, two long boats, and one beacon. The methuselah is very directional; the ash is elongated and centered well northwest of the starting location.

See also

• List of long-lived methuselahs

External links

• 52513M at Adam P. Goucher's Catagolue (long-lived pattern)