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In https://proofwiki.org/wiki/Definition:Graham%27s_Number https://proofwiki.org/wiki/Definition:Graham%27s_Number it states "Amusingly, given that Graham's
by ClassyJacket 3y ago
In
https://proofwiki.org/wiki/Definition:Graham%27s_Number https://proofwiki.org/wiki/Definition:Graham%27s_Number
it states
"Amusingly, given that Graham's number is an upper bound, the actual solution to the problem in question, according to certain experts, may well be 6. "
I cannot edit the page but I believe they're up to at least 13 now.