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"GRAHAM'S NUMBER," named after mathematician Ron Graham, is so vast that it held the world record for the largest number ever used in a serious mathematical proof. Graham's number is much larger than other large numbers such as a googol and a googolplex. In fact, the observable universe is far too small to contain a written representation of Graham's number.

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"GRAHAM'S NUMBER" POSTCARD
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"GRAHAM'S NUMBER" POSTCARD
Sale Price £1.28. Original Price £1.60.
"Graham's Number . . . because size matters" Mouse Mat
"Graham's Number . . . because size matters" Mouse Mat
Price£12.30
"Graham's Number . . . because size matters" T-Shirt
"Graham's Number . . . because size matters" T-Shirt
Price£29.60
"Graham's Number . . . because size matters" T-Shirt
"Graham's Number . . . because size matters" T-Shirt
Price£37.35
GRAHAM'S NUMBER in GRAHAM'S OWN HANDWRITING Coffee Mug
GRAHAM'S NUMBER in GRAHAM'S OWN HANDWRITING Coffee Mug
Price£11.95
"GRAHAM'S NUMBER" POSTER
"GRAHAM'S NUMBER" POSTER
Price£19.75
"GRAHAM'S NUMBER" POSTCARD
Save 20%
"GRAHAM'S NUMBER" POSTCARD
Sale Price £1.28. Original Price £1.60.
"GRAHAM'S NUMBER" T-Shirt
"GRAHAM'S NUMBER" T-Shirt
Price£23.15
"GRAHAM'S NUMBER" CALENDAR
"GRAHAM'S NUMBER" CALENDAR
Price£22.40
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