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The name of a number 10 3n+3, where n is greater than or equal to 1000, is formed by concatenating the names of the numbers of the form 10 3m+3, where m represents each group of comma-separated digits of n, with each but the last "-illion" trimmed to "-illi-", or, in the case of m = 0, either "-nilli-" or "-nillion". [17]
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 ]
Sagan gave an example that if the entire volume of the observable universe is filled with fine dust particles roughly 1.5 micrometers in size (0.0015 millimeters), then the number of different combinations in which the particles could be arranged and numbered would be about one googolplex. [8] [9]
There are names for numbers larger than crore, but they are less commonly used. These include arab (100 crore , 1 billion), kharab (100 arab , 100 billion), nil or sometimes transliterated as neel (100 kharab, 10 trillion), padma (100 nil, 1 quadrillion), shankh (100 padma, 100 quadrillion), and mahashankh (100 shankh, 10 quintillion).
Which number should replace the question mark to form accurate equations, knowing that three numbers are shown per row (i.e. two of the numbers form a two-digit number)? Answer : 6. Read every row ...
A number form from one of Francis Galton's (1888) subjects. Note the convolutions, and how the first 12 digits correspond to a clock face. Number forms are idiosyncratic to the person experiencing them. A number form is a mental map of numbers, which automatically and involuntarily appears whenever someone who experiences number-forms thinks of ...
an abundant number is lesser than the sum of its proper divisors; that is, s(n) > n; a highly abundant number has a sum of positive divisors that is greater than any lesser number; that is, σ(n) > σ(m) for every positive integer m < n. Counterintuitively, the first seven highly abundant numbers are not abundant numbers.
The long and short scales are two powers of ten number naming systems that are consistent with each other for smaller numbers, but are contradictory for larger numbers. [1] [2] Other numbering systems, particularly in East Asia and South Asia, have large number naming that differs from both the long and short scales.