This sequence of six nines is sometimes called the “Feynman point”, after physicist Richard Feynman, who allegedly stated this same idea in a lecture. However it is not clear when, or even if, Feynman made such a statement. It is not mentioned in published biographies or in his autobiographies, and is unknown to his biographer, James Gleick.- Six nines in pi (Wikipedia)
A sequence of six consecutive nines occurs in the decimal representation of the number pi (π), starting at the 762nd decimal place. It has become famous because of the mathematical coincidence, and because of the idea that one could memorize the digits of π up to that point, and then suggest that π is rational. The earliest known mention of this idea occurs in Douglas Hofstadter’s 1985 book Metamagical Themas…