Sum of Natural Numbers (second proof and extra footage)

Numberphile · 1.8M views · 2015 · 21:06

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Why the open web links it

Explores the surprising result that the sum of all natural numbers equals -1/12, with a second proof and discussion of its implications.

Linked by 10 independent sites, 3 of them widely read in the 2026-10 crawl of the open web, including wikipedia.org, ycombinator.com, wolfram.com, maths.org, 137consulting.com.

Cited in 1 Wikipedia article, including 1 + 2 + 3 + 4 + ⋯.