my favorite number is not 42... this i can say as i am not a brainless dolt who reads stupid hitchhiker books and gets obsessed.
hmmmmm 69.......
other obvious numbers are 68.. .blow me and i'll owe you one..... and 666.
I think realistically however there are some impressively beautiful numbers in maths:
examples are
look at the number 9. everyone one did their 9 times tables. 9x6 = 54. 5+4 =9 and such.
or
perfect numbers which are a positive integer that is equal to the sum of its proper positive divisors...
example = 6, because 1, 2, and 3 are its proper positive divisors, and 1 + 2 + 3 = 6. and 28 28 = 1 + 2 + 4 + 7 + 14.
or
euler's identity.
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or
the golden ratio
two quantities are in the golden ratio if their ratio is the same as the ratio of their sum to their maximum.
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1.618 don't ask but in archetecture this raio just works and the most beautful buildings use this ratio
Or finally
Fibonacci Numbers
these are amazing. nature follows a pattern... the petals on a flower will be 3, 5, 8, 13, 21, 34 or 55.. why F knows but its just predictable and every flower you can think of will use one of these numbers.
just look at it.
each number is obtained from the sum of the two preceding 55 = 34+21... now you tell me how nature "knows" that.
then there's puzzles
Take the number of the month you were born,
multiply by 4,
add 13,
multiply by 25, subtract 200,
add the day of the month on which you were born,
multiply by 2, subtract 40, multiply by 50, add the last two digits of the year in which you were born,
subtract 10,500.
Notice anything funny about your answer?
yes amazingly it will be the american way of writing your DOB... scary stuff eh?