What is your favorite number?

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If you have one, what is your favorite number?

I have several: 1, 4, 5, 15, 28, 42, 64, 73, 119, 151, 210, but the favorite of my favorites right now is 15.

My big time favorite used to be 8

I also had a liking for:
2
4
5
9
10
11
13
14
16
17
25
28
75
105

My favourite is nine, because of the endlessly fascinating fact that it always returns to itself. That's if we're resricted to integers, if not, then it'd have to be e, the most powerful mathematical constant.

6

Simple my favourite number is 73

My lucky number is

3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930381964428810975665933446128475648233786783165271201909145648566923460348610454326648213393607260249141273724587006606315588174881520920962829254091715364367892590360011330530548820466521384146951941511609

e^π√163 = 262537412640768743.99999999999925...

The one in my username I like all perfect numbers, but I have colour-grapheme seizure and 8128 has a particularly nice colour to me (a kind of mauve/pink)

The Golden Ratio, “Phi”.

Phi = ((1 + (5^0.5)) / 2)

Fnord’s Theorem states that Phi is the only number with the following property: (Phi - 1) = (1 / Phi).

Phi = 1.618033988749892880393842...

1/Phi = 0.618033988749892880393842...

64

I like irrational numbers, like "square root of 2", because they make you think.

How can a number that never terminates, possibly exist in reality?

27

Lately I have started to fall in love with...5040!

The opposite of a prime number is a "composite number". Primes being numbers not divisible by anything other than themselves and one.

Fifty forty is an example of an "extreme composite" number. Its divisible by EVERY integer from one through ten.

If I were supreme dictator I would tell them to stuff the metric system, but also to modify the Imperial system.

I would decree that a "mile" would no longer be 5280 feet, but would 5040 feet. That way you could easily reckon the number of feet in... half of a mile, third, forth, fifth, sixth, seventh, eighth, ninth, and a tenth of a mile. Would that be cool, or what?

The irony is that not only do irrational numbers exist, they are majority of numbers. Its the rational numbers (integers, and fractions that have a terminus, or a repeating pattern in their digital form) that are the exceptions.

Sure, they exist in your mind, like vampires and werewolfs.

However, how can a number that never terminates represent a definite length in reality?

3

Years ago when I was an undergrad in mathematics, I fell asleep in class one day. The prof woke me up by asking me question. I started to answer "3" but figured that giving a smart-alec answer would just make him mad. So I just said "I don't know".

It turned out the answer was "3".

Ever since then, "3" is my standard answer for any question.

What kind of car do you drive? 3.

What is your favorite food? 3.

What is today? 3.

How fast are you driving? 3.

Would you like a hamburger? 3.

Get real.

ALL numbers "only exist in your mind like vampires".

What do you think most lengths are?

If you take a yardstick and just randomly hit it with an axe the axe will not likely cut the yardstick right at designated marking for a number of inches, nor right at a half inch, or a quarter inch, etc.

Most points on a yardstick are between the man made markings for the man made units of measurement on the yardstick. And they are not located at evenly divisible fractions of those manmade markings either (use your imagination and imaging you zeroing in on the yardstick down to the atomic level and beyond). Most atoms on a yardstick are at positions on the yardstick that can only be described as being at irrational number decimal units of the inches, or centimeters used on the ruler.