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  2. List of prime numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_prime_numbers

    A prime number (or prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. By Euclid's theorem , there are an infinite number of prime numbers. Subsets of the prime numbers may be generated with various formulas for primes .

  3. List of numbers - Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/List_of_numbers

    A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.

  4. Tracing paper - Wikipedia

    en.wikipedia.org/wiki/Tracing_paper

    Tracing paper is paper made to have low opacity, allowing light to pass through. Its origins date back to at least the 1300s where it was used by artists of the Italian Renaissance. [1] In the 1880s, tracing paper was produced en masse, used by architects, design engineers, and artists. [2] Tracing paper was key in creating drawings that could ...

  5. Prime number - Wikipedia

    en.wikipedia.org/wiki/Prime_number

    A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways of writing it as a product, 1 × 5 or 5 × 1, involve 5 itself. However, 4 is composite because it is a ...

  6. Natural number - Wikipedia

    en.wikipedia.org/wiki/Natural_number

    Some Greek mathematicians treated the number 1 differently than larger numbers, sometimes even not as a number at all. Euclid, for example, defined a unit first and then a number as a multitude of units, thus by his definition, a unit is not a number and there are no unique numbers (e.g., any two units from indefinitely many units is a 2).

  7. List of Formula One driver numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_Formula_One_driver...

    This is also the case for free practice-only drivers. Some examples of those numbers are 36 (used by Antonio Giovinazzi in two races), 38 (used by Oliver Bearman in one race), 39 (used by Brendon Hartley in one race), 40 (used by Paul di Resta in one race and Liam Lawson in five), 45 (used by André Lotterer and Nyck de Vries in one race each ...

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