EntityQ908427· pop 28· linked from 109 articlesKnuth's up-arrow notationSign in to savemethod of notation of very large integersConnectionshyperoperationEntitylarge numberEntityprimitive recursive functionEntitybusy beaverEntityWEBEntityKruskal's tree theoremEntitymathematicsEntitynumberEntityarithmeticEntityemailEntitysoftwareEntityprogramming languageEntityalgorithmEntitynatural numberEntityintegerEntityCarl SaganEntityadditionEntitymultiplicationEntitydivisionEntitylogarithmEntityCategories1976 introductionsDonald KnuthLarge numbersMathematical notation