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  2. The Number Devil - Wikipedia

    en.wikipedia.org/wiki/The_Number_Devil

    The Number Devil: A Mathematical Adventure (German: Der Zahlenteufel. Ein Kopfkissenbuch für alle, die Angst vor der Mathematik haben) is a book for children and ...

  3. List of bad luck signs - Wikipedia

    en.wikipedia.org/wiki/List_of_bad_luck_signs

    The number 17. Fear of the number 17 is known as heptadecaphobia and is prominent in Italian culture. [6] The number 39. Fear of the number 39 is known as the curse of 39, especially in Afghan culture. [7] The number 43. In Japanese culture, maternity wards numbered 43 are considered taboo, as the word for the number means "still birth". [8 ...

  4. 666 (number) - Wikipedia

    en.wikipedia.org/wiki/666_(number)

    The number of integers which are relatively prime to 666 is also 216, () =; [6] and for an angle measured in degrees, ⁡ = ⁡ = (where here is the golden ratio). [ 7 ] [ 8 ] [ a ] 666 is also the sum of the squares of the first seven primes (2 2 + 3 2 + 5 2 + 7 2 + 11 2 + 13 2 + 17 2 ) , [ 7 ] [ 10 ] while the number of twin primes less than ...

  5. List of occult symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_occult_symbols

    The tetractys is an equidistant and equiangular arrangement of ten points inside a triangle, akin to the fourth triangle number. It was developed by Pythagoras , and collectively signifies cosmic unity in the form of The Decad, as well as the musica universalis , or collective abstraction of the music generated by heavenly cosmic bodies.

  6. Numerophobia - Wikipedia

    en.wikipedia.org/wiki/Numerophobia

    Fear of specific numbers can be associated with cultural and religious factors. For example, 666 are 3 numbers combined that represent the antichrist in the bible. In China, Vietnam, and Japan, 4 is a number that represents death. In many cultures the number 13 is also an unlucky number which people fear.

  7. Belphegor's prime - Wikipedia

    en.wikipedia.org/wiki/Belphegor's_prime

    A Belphegor number is a palindromic number in the form of () ().The sequence of the first four Belphegor numbers is: ,,,, … Dubner noticed that 16661 is a prime number. By adding zeroes directly on both sides of the 666, Dubner found more palindromic prime numbers, including the Belphegor prime, which is second in the sequence.

  8. Number of the beast - Wikipedia

    en.wikipedia.org/wiki/Number_of_the_beast

    Let him that hath understanding count the number of the beast: for it is the number of a man; and his number is 666." In several editions of the Greek Bible , the number is represented by the final three words, ἑξακόσιοι ἑξήκοντα ἕξ , hexakósioi hexēkonta héx , meaning "six hundred [and] sixty-six": [ 12 ] [ 13 ]

  9. Rotraut Susanne Berner - Wikipedia

    en.wikipedia.org/wiki/Rotraut_Susanne_Berner

    Rotraut Susanne Berner (born 26 August 1948, in Stuttgart) is a German graphic designer and illustrator. [1] She illustrated The Number Devil by Hans Magnus Enzensberger. [2] ...