What is the largest integer ever used in a mathematical proof?

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Graham's number

Centillion

Graham's number is an enormous number that arises as an upper bound on the answer of a problem in the mathematical field of Ramsey theory. The number was published in the 1980 Guinness Book of World Records, adding to its popular interest.

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Australia

90%

Pakistan

83%

Ghana

10%

80%

10%

Republic of Ireland

30%

69%

Greece

19%

52%

19%

India

17%

28%

47%

the United States

18%

27%

46%

Austria

27%

41%

Spain

60%

40%

the United Kingdom

23%

30%

38%

Germany

31%

26%

37%

460

the Netherlands

20%

30%

35%

15%

Canada

14%

21%

35%

28%

Poland

12%

37%

33%

15%

6271

Switzerland

22%

31%

33%

10%

France

38%

23%

30%

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