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  2. List of prime numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_prime_numbers

    A different computation found that there are 18,435,599,767,349,200,867,866 primes (roughly 2 × 10 22) smaller than 10 24, if the Riemann hypothesis is true. [ 4 ] Lists of primes by type

  3. List of countries by income inequality - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    Income ratios include the pre-tax national income share held by the top 10% of the population and the ratio of the upper bound value of the ninth decile (i.e., the 10% of people with the highest income) to that of the upper bound value of the first decile (the ratio of the average income of the richest 10% to the poorest 10%).

  4. IQ classification - Wikipedia

    en.wikipedia.org/wiki/IQ_classification

    David Wechsler, developer of the Wechsler–Bellevue Scale of 1939 (which was later developed into the Wechsler Adult Intelligence Scale) popularized the use of "deviation IQs" as standard scores of IQ tests rather than the "quotient IQs" ("mental age" divided by "chronological age") then used for the Stanford–Binet test. [67]

  5. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    According to Mikhail B. Sevryuk, in the January 2006 issue of the Bulletin of the American Mathematical Society, "The number of papers and books included in the Mathematical Reviews (MR) database since 1940 (the first year of operation of MR) is now more than 1.9 million, and more than 75 thousand items are added to the database each year. The ...

  6. List of unicorn startup companies - Wikipedia

    en.wikipedia.org/wiki/List_of_unicorn_startup...

    9.5 May 2021 [75] Marketing United States OutSystems: 9.5 February 2021 [76] Software development: Portugal [77] / United States [78] Paulo Rosado, Rui Pereira ServiceTitan 9.5 June 2021 [79] Software United States HeyTea: 9.3 July 2021 [80] Retail China VAST Data: 9 December 2023 () [81] Data storage United States Tanium: 9 June 2020 [82 ...

  7. Energy density - Wikipedia

    en.wikipedia.org/wiki/Energy_density

    If the produced H 2 O is vapor, this is generally greater than the lower heat of combustion, whereas if the produced H 2 O is liquid, it is generally less than the higher heat of combustion. But in the most relevant case of hydrogen, Δ G is 113 MJ/kg if water vapor is produced, and 118 MJ/kg if liquid water is produced, both being less than ...

  8. Misery index (economics) - Wikipedia

    en.wikipedia.org/wiki/Misery_index_(economics)

    Using data from 1960 to 2005, they have found that the Misery Index and the crime rate correlate strongly and that the Misery Index seems to lead the crime rate by a year or so. [10] In fact, the correlation is so strong that the two can be said to be cointegrated , and stronger than correlation with either the unemployment rate or inflation ...

  9. West Lancashire (UK Parliament constituency) - Wikipedia

    en.wikipedia.org/wiki/West_Lancashire_(UK...

    [3] West Lancashire is home to a significant proportion of those working at managerial and professional levels and an above average retired age quotient. [4] Workless claimants who were registered jobseekers were in November 2012 lower than the national average of 3.8%, at 3.5% of the population based on a statistical compilation by The ...