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  2. Jeremy Harper - Wikipedia

    en.wikipedia.org/wiki/Jeremy_Harper

    Jeremy Harper (born June 18, 1976) is an American entrant in the Guinness Book of World Records for counting aloud to 1,000,000, live-streaming the entire process.. The count took Harper 89 days, during each of which he spent sixteen hours counting.

  3. Graham's number - Wikipedia

    en.wikipedia.org/wiki/Graham's_number

    Graham's number was used by Graham in conversations with popular science writer Martin Gardner as a simplified explanation of the upper bounds of the problem he was working on. In 1977, Gardner described the number in Scientific American, introducing it to the general public. At the time of its introduction, it was the largest specific positive ...

  4. History of large numbers - Wikipedia

    en.wikipedia.org/wiki/History_of_large_numbers

    The Ancient Greeks used a system based on the myriad, that is, ten thousand, and their largest named number was a myriad myriad, or one hundred million. In The Sand Reckoner , Archimedes (c. 287–212 BC) devised a system of naming large numbers reaching up to

  5. Large numbers - Wikipedia

    en.wikipedia.org/wiki/Large_numbers

    The number of neuronal connections in the human brain (estimated at 10 14), or 100 trillion; The Avogadro constant is the number of "elementary entities" (usually atoms or molecules) in one mole; the number of atoms in 12 grams of carbon-12 – approximately 6.022 × 10 23, or 602.2 sextillion.

  6. 2,147,483,647 - Wikipedia

    en.wikipedia.org/wiki/2,147,483,647

    Euler ascertained that 2 31 − 1 = 2147483647 is a prime number; and this is the greatest at present known to be such, and, consequently, the last of the above perfect numbers [i.e., 2 30 (2 31 − 1)], which depends upon this, is the greatest perfect number known at present, and probably the greatest that ever will be discovered; for as they ...

  7. AOL

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    The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

  8. Largest known prime number - Wikipedia

    en.wikipedia.org/wiki/Largest_known_prime_number

    The following table lists the progression of the largest known prime number in ascending order. [3] Here M p = 2 p − 1 is the Mersenne number with exponent p, where p is a prime number. The longest record-holder known was M 19 = 524,287, which was the largest known prime for 144 years. No records are known prior to 1456.

  9. Googol - Wikipedia

    en.wikipedia.org/wiki/Googol

    Kasner used it to illustrate the difference between an unimaginably large number and infinity, and in this role it is sometimes used in teaching mathematics. To put in perspective the size of a googol, the mass of an electron, just under 10 -30 kg, can be compared to the mass of the visible universe, estimated at between 10 50 and 10 60 kg. [ 5 ]