Main Page - Revision history

Loader3229 at 01:52, 11 November 2026

2026-11-11T01:52:48Z

← Older revision		Revision as of 01:52, 11 November 2026
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	\| style="background: #ddc290;" \| [[BB(3,4)]] > <math>2 \uparrow^{15} 5</math>		\| style="background: #ddc290;" \| [[BB(3,4)]] > <math>2 \uparrow^{15} 5</math>
	\| style="background: #ddc290;" \| [[BB(4,4)]] > <math>2 \uparrow^{509} 3</math>		\| style="background: #ddc290;" \| [[BB(4,4)]] > <math>2 \uparrow^{509} 3</math>
	\| style="background: #ddc290;" \| BB(5,4) > <math>f_\omega^2~~(10~~\uparrow^~~4 10\uparrow\uparrow 65\,533~~)</math>		\| style="background: #ddc290;" \| BB(5,4) > <math>f_\omega^3(2 \uparrow^{15} 5)</math>
	\| style="background: yellow;" \| BB(6,4) > <math> f_{\omega+1}(10\uparrow\uparrow 65\,533)</math>		\| style="background: yellow;" \| BB(6,4) > <math> f_{\omega+1}(10\uparrow\uparrow 65\,533)</math>
	\| style="background: yellow;" \|BB(7,4) > <math> f_{\omega+3}(21)</math>		\| style="background: yellow;" \|BB(7,4) > <math> f_{\omega+3}(21)</math>

Polygon: Updated BB(7,4)

2026-11-07T15:40:43Z

Updated BB(7,4)

← Older revision		Revision as of 15:40, 7 November 2026
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	\| style="background: #ddc290;" \| BB(5,4) > <math>f_\omega^2(10\uparrow^4 10\uparrow\uparrow 65\,533)</math>		\| style="background: #ddc290;" \| BB(5,4) > <math>f_\omega^2(10\uparrow^4 10\uparrow\uparrow 65\,533)</math>
	\| style="background: yellow;" \| BB(6,4) > <math> f_{\omega+1}(10\uparrow\uparrow 65\,533)</math>		\| style="background: yellow;" \| BB(6,4) > <math> f_{\omega+1}(10\uparrow\uparrow 65\,533)</math>
	\| style="background: yellow;" \|BB(7,4) > <math>f_{\omega+2}(28)</math>		\| style="background: yellow;" \|BB(7,4) > <math> f_{\omega+3}(21)</math>
	\|-		\|-
	!5-symbol		!5-symbol

Polygon: /* This Month in Beaver Research (TMBR) */ May is not yet officially published

2026-11-07T14:42:24Z

This Month in Beaver Research (TMBR): May is not yet officially published

← Older revision		Revision as of 14:42, 7 November 2026
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	[[:Category:This Month in Beaver Research\|This Month in Beaver Research]] (TMBR, pronounced "timber") is a monthly summary of Busy Beaver research progress. Here are the three most recent released entries:		[[:Category:This Month in Beaver Research\|This Month in Beaver Research]] (TMBR, pronounced "timber") is a monthly summary of Busy Beaver research progress. Here are the three most recent released entries:

	* [[TMBR: May 2026]]
	* [[TMBR: April 2026]]		* [[TMBR: April 2026]]
	* [[TMBR: March 2026]]		* [[TMBR: March 2026]]
			* [[TMBR: February 2026]]

	[[TMBR: June 2026]], [[TMBR: July 2026]], [[TMBR: August 2026]], [[TMBR: September 2026]], [[TMBR: October 2026]], and [[TMBR: November 2026]] are currently works in progress.		[[TMBR: May 2026]], [[TMBR: June 2026]], [[TMBR: July 2026]], [[TMBR: August 2026]], [[TMBR: September 2026]], [[TMBR: October 2026]], and [[TMBR: November 2026]] are currently works in progress.

	This Year in Beaver Research (TYBR) is a yearly summary of Busy Beaver research progress. Its first edition, [[TYBR: 2025]] is currently a work in progress.		This Year in Beaver Research (TYBR) is a yearly summary of Busy Beaver research progress. Its first edition, [[TYBR: 2025]] is currently a work in progress.

Merieke: New 7,6 champion

2026-11-07T12:14:53Z

New 7,6 champion

← Older revision		Revision as of 12:14, 7 November 2026
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	\| style="background: yellow;" \| BB(5,6) > <math> f_{\omega+3}(31)</math>		\| style="background: yellow;" \| BB(5,6) > <math> f_{\omega+3}(31)</math>
	\| style="background: yellow;" \| BB(6,6) > <math> f_{\omega \times 2}(89)</math>		\| style="background: yellow;" \| BB(6,6) > <math> f_{\omega \times 2}(89)</math>
	\| style="background: yellow;" \| BB(7,6) > <math> f_{\omega^2}(63)</math>		\| style="background: yellow;" \| BB(7,6) > <math> f_{\omega^2}(110)</math>
	\|-		\|-
	!7-symbol		!7-symbol

Loader3229 at 03:03, 7 November 2026

2026-11-07T03:03:55Z

← Older revision		Revision as of 03:03, 7 November 2026
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	\| style="background: #ddc290;" \| BB(5,4) > <math>f_\omega^2(10\uparrow^4 10\uparrow\uparrow 65\,533)</math>		\| style="background: #ddc290;" \| BB(5,4) > <math>f_\omega^2(10\uparrow^4 10\uparrow\uparrow 65\,533)</math>
	\| style="background: yellow;" \| BB(6,4) > <math> f_{\omega+1}(10\uparrow\uparrow 65\,533)</math>		\| style="background: yellow;" \| BB(6,4) > <math> f_{\omega+1}(10\uparrow\uparrow 65\,533)</math>
	\| style="background: yellow;" \|		\| style="background: yellow;" \|BB(7,4) > <math>f_{\omega+2}(28)</math>
	\|-		\|-
	!5-symbol		!5-symbol

Merieke: added the new BB(4,7) champ

2026-11-05T20:40:41Z

added the new BB(4,7) champ

← Older revision		Revision as of 20:40, 5 November 2026
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	\| style="background: #ddc290;" \| [[BB(2,7)]] > <math>10 \uparrow \uparrow 10 \uparrow\uparrow 10 \uparrow\uparrow 155</math>		\| style="background: #ddc290;" \| [[BB(2,7)]] > <math>10 \uparrow \uparrow 10 \uparrow\uparrow 10 \uparrow\uparrow 155</math>
	\| style="background: yellow;" \| BB(3,7) > <math> f_{\omega+1}(117)</math>		\| style="background: yellow;" \| BB(3,7) > <math> f_{\omega+1}(117)</math>
	\| style="background: yellow;" \| BB(4,7) > <math> f_{\omega+2}(~~124~~)</math>		\| style="background: yellow;" \| BB(4,7) > <math>f_{\omega+3}(34)</math>
	\| style="background: yellow;" \|		\| style="background: yellow;" \|
	\| style="background: yellow;" \|		\| style="background: yellow;" \|

Jacobzheng at 06:15, 5 November 2026

2026-11-05T06:15:47Z

← Older revision		Revision as of 06:15, 5 November 2026
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	\|-		\|-
	!2-symbol		!2-symbol
	\| [[BB(2)]] = 6		\| [[BB(2)]] = 6
	\| [[BB(3)]] = 21		\| [[BB(3)]] = 21
	\| [[BB(4)]] = 107		\| [[BB(4)]] = 107
	\| [[BB(5)]] = 47,176,870		\| [[BB(5)]] = 47,176,870
	\| style="background: orange;" title="Cryptids: Antihydra and some other cryptids" \| [[BB(6)]] > <math>10 \uparrow\uparrow 10 \uparrow\uparrow 10 \uparrow\uparrow 8</math>		\| style="background: orange;" title="Cryptids: Antihydra and some other cryptids" \| [[BB(6)]] > <math>10 \uparrow\uparrow 10 \uparrow\uparrow 10 \uparrow\uparrow 8</math>
	\| style="background: #ddc290;" \| [[BB(7)]] > <math>3 \uparrow^{20} 3</math>		\| style="background: #ddc290;" \| [[BB(7)]] > <math>3 \uparrow^{20} 3</math>

Jacobzheng at 06:14, 5 November 2026

2026-11-05T06:14:36Z

← Older revision		Revision as of 06:14, 5 November 2026
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	{\| class="wikitable"		{\| class="wikitable"
	\|+ Small busy beaver values (up to 7 states and symbols)<ref>P. Michel, "[https://bbchallenge.org/~pascal.michel/ha.html Historical survey of Busy Beavers]".</ref>		\|+ Small busy beaver values (up to 7 states and symbols)<ref>P. Michel, "[https://bbchallenge.org/~pascal.michel/ha.html Historical survey of Busy Beavers]".</ref>
	!~~state→ symbol↓~~ !!2 !!3 !!4 !!5 !!6 !!7		! !!2-state !!3-state !!4-state !!5-state !!6-state !!7-state
	\|-		\|-
	!2		!2-symbol
	\| [[BB(2)]] = 6		\| [[BB(2)]] = 6
	\| [[BB(3)]] = 21		\| [[BB(3)]] = 21
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	\| style="background: #ddc290;" \| [[BB(7)]] > <math>3 \uparrow^{20} 3</math>		\| style="background: #ddc290;" \| [[BB(7)]] > <math>3 \uparrow^{20} 3</math>
	\|-		\|-
	!3		!3-symbol
	\| [[BB(2,3)]] = 38		\| [[BB(2,3)]] = 38
	\| style="background: orange;" title="Cryptid: Bigfoot" \| [[BB(3,3)]] <math>\ge</math> 119,112,334,170,342,541		\| style="background: orange;" title="Cryptid: Bigfoot" \| [[BB(3,3)]] <math>\ge</math> 119,112,334,170,342,541
	\| style="background: #ddc290;" \| [[BB(4,3)]] > <math>10 \uparrow^{4} 4</math>		\| style="background: #ddc290;" \| [[BB(4,3)]] > <math>10 \uparrow^{4} 4</math>
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	\| style="background: #ddc290;" \|		\| style="background: #ddc290;" \|
	\|-		\|-
	!4		!4-symbol
	\| [[BB(2,4)]] = 3,932,964		\| [[BB(2,4)]] = 3,932,964
	\| style="background: #ddc290;" \| [[BB(3,4)]] > <math>2 \uparrow^{15} 5</math>		\| style="background: #ddc290;" \| [[BB(3,4)]] > <math>2 \uparrow^{15} 5</math>
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	\| style="background: yellow;" \|		\| style="background: yellow;" \|
	\|-		\|-
	!5		!5-symbol
	\| style="background: orange;" title="Cryptids: Hydra and Bonus Cryptid" \| [[BB(2,5)]] > <math>10^{10^{10^{3\,314\,360}}}</math>		\| style="background: orange;" title="Cryptids: Hydra and Bonus Cryptid" \| [[BB(2,5)]] > <math>10^{10^{10^{3\,314\,360}}}</math>
	\| style="background: #ddc290;" \| [[BB(3,5)]] > <math> f_\omega(2 \uparrow^{15} 5)</math>		\| style="background: #ddc290;" \| [[BB(3,5)]] > <math> f_\omega(2 \uparrow^{15} 5)</math>
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	\| style="background: yellow;" \|BB(7,5) > <math>f_{\omega+3}^2(10)</math>		\| style="background: yellow;" \|BB(7,5) > <math>f_{\omega+3}^2(10)</math>
	\|-		\|-
	!6		!6-symbol
	\| style="background: #ddc290;" \| [[BB(2,6)]] > <math>10 \uparrow \uparrow 10 \uparrow\uparrow 10^{10^{115}}</math>		\| style="background: #ddc290;" \| [[BB(2,6)]] > <math>10 \uparrow \uparrow 10 \uparrow\uparrow 10^{10^{115}}</math>
	\| style="background: #ddc290;" \| BB(3,6) > <math> f_\omega^3(15)</math>		\| style="background: #ddc290;" \| BB(3,6) > <math> f_\omega^3(15)</math>
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	\| style="background: yellow;" \| BB(7,6) > <math> f_{\omega^2}(63)</math>		\| style="background: yellow;" \| BB(7,6) > <math> f_{\omega^2}(63)</math>
	\|-		\|-
	!7		!7-symbol
	\| style="background: #ddc290;" \| [[BB(2,7)]] > <math>10 \uparrow \uparrow 10 \uparrow\uparrow 10 \uparrow\uparrow 155</math>		\| style="background: #ddc290;" \| [[BB(2,7)]] > <math>10 \uparrow \uparrow 10 \uparrow\uparrow 10 \uparrow\uparrow 155</math>
	\| style="background: yellow;" \| BB(3,7) > <math> f_{\omega+1}(117)</math>		\| style="background: yellow;" \| BB(3,7) > <math> f_{\omega+1}(117)</math>

JackzNkk06 at 06:04, 5 November 2026

2026-11-05T06:04:00Z

← Older revision		Revision as of 06:04, 5 November 2026
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	{\| class="wikitable"		{\| class="wikitable"
	\|+ Small busy beaver values (up to 7 states and symbols)<ref>P. Michel, "[https://bbchallenge.org/~pascal.michel/ha.html Historical survey of Busy Beavers]".</ref>		\|+ Small busy beaver values (up to 7 states and symbols)<ref>P. Michel, "[https://bbchallenge.org/~pascal.michel/ha.html Historical survey of Busy Beavers]".</ref>
	!~~state symbol~~ !!2 !!3 !!4 !!5 !!6 !!7		!state→ symbol↓ !!2 !!3 !!4 !!5 !!6 !!7
	\|-		\|-
	!2		!2

JackzNkk06 at 06:01, 5 November 2026

2026-11-05T06:01:01Z

← Older revision		Revision as of 06:01, 5 November 2026
Line 10:		Line 10:
	{\| class="wikitable"		{\| class="wikitable"
	\|+ Small busy beaver values (up to 7 states and symbols)<ref>P. Michel, "[https://bbchallenge.org/~pascal.michel/ha.html Historical survey of Busy Beavers]".</ref>		\|+ Small busy beaver values (up to 7 states and symbols)<ref>P. Michel, "[https://bbchallenge.org/~pascal.michel/ha.html Historical survey of Busy Beavers]".</ref>
	!state\n symbol !!2 !!3 !!4 !!5 !!6 !!7		!state symbol !!2 !!3 !!4 !!5 !!6 !!7
	\|-		\|-
	!2		!2

← Older revision		Revision as of 01:52, 11 November 2026
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	\| style="background: #ddc290;" \| [[BB(3,4)]] > <math>2 \uparrow^{15} 5</math>		\| style="background: #ddc290;" \| [[BB(3,4)]] > <math>2 \uparrow^{15} 5</math>
	\| style="background: #ddc290;" \| [[BB(4,4)]] > <math>2 \uparrow^{509} 3</math>		\| style="background: #ddc290;" \| [[BB(4,4)]] > <math>2 \uparrow^{509} 3</math>
	\| style="background: #ddc290;" \| BB(5,4) > <math>f_\omega^2~~(10~~\uparrow^~~4 10\uparrow\uparrow 65\,533~~)</math>		\| style="background: #ddc290;" \| BB(5,4) > <math>f_\omega^3(2 \uparrow^{15} 5)</math>
	\| style="background: yellow;" \| BB(6,4) > <math> f_{\omega+1}(10\uparrow\uparrow 65\,533)</math>		\| style="background: yellow;" \| BB(6,4) > <math> f_{\omega+1}(10\uparrow\uparrow 65\,533)</math>
	\| style="background: yellow;" \|BB(7,4) > <math> f_{\omega+3}(21)</math>		\| style="background: yellow;" \|BB(7,4) > <math> f_{\omega+3}(21)</math>

← Older revision		Revision as of 20:40, 5 November 2026
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	\| style="background: #ddc290;" \| [[BB(2,7)]] > <math>10 \uparrow \uparrow 10 \uparrow\uparrow 10 \uparrow\uparrow 155</math>		\| style="background: #ddc290;" \| [[BB(2,7)]] > <math>10 \uparrow \uparrow 10 \uparrow\uparrow 10 \uparrow\uparrow 155</math>
	\| style="background: yellow;" \| BB(3,7) > <math> f_{\omega+1}(117)</math>		\| style="background: yellow;" \| BB(3,7) > <math> f_{\omega+1}(117)</math>
	\| style="background: yellow;" \| BB(4,7) > <math> f_{\omega+2}(~~124~~)</math>		\| style="background: yellow;" \| BB(4,7) > <math>f_{\omega+3}(34)</math>
	\| style="background: yellow;" \|		\| style="background: yellow;" \|
	\| style="background: yellow;" \|		\| style="background: yellow;" \|