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27
iNaturalist turns 18!
(thelemmy.club)
18! = 6 402 373 705 728 000
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68
I’m 19!
(thelemmy.club)
Which is about 1.2*10^17. Makes me feel very young now that I see how old some Lemmy users are.
Just for reference, the age of the universe is estimated to be around 13.787 *10^9 years.
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51
30! drop in social credit score
(thelemmy.club)
Original post: https://feddit.de/post/13150286
30! ≈ 2.7*10^32 according to WolframAlpha
9
49
September 24!
(thelemmy.club)
Now September has about 6.2*10^23 days, which is several orders of magnitude longer than the age of the known universe.
Unexpected Factorial
212 readers
1 users here now
When you use an exclamation mark with a number, you’re actually implying it’s not a normal number any more. It’s a factorial!
Ok, so how does this work?
5!=1×2×3×4×5=120
6!=720
These numbers get really large. For example:
15!≈1.3×10^12
So, next time you see a headline with 2000! in it, you’ll know what to expect.
There are also double factorials (n!!) and iterated factorials (n!)!, and they aren’t the same thing. Just add more exclamation marks and you get multifactorial. Check wikipedia to see how spicy it gets.
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