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Q: How many years would it take to count 12600 trillion intelligent alien civilizations in the universe?

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Yes. There are at least 12,600 trillion intelligent civilizations (i.e. sentient species) in the observable universe (126,000 per galaxy). They come in all shapes, sizes, colors, unusual features, etc. There is also at least 100 billion in-universe reference books of them (excluding non-sentient ones), because in addition to their large portraits, they get a 1 1/2 page detailed description of their species, their histories and what planet and/or moon they're from, which is at least 189,000 pages in length per book. But for now, it is unknown.

12600

60 is a factor of 12600 so their LCM is 12600.

12600

No. 12600 is a bit bigger than 2!

percentage of 126 = 12600%= 126 * 100%= 12600%

The prime factors of 12600 are: 2,3,5,7

There are 5280 feet in one mile. Therefore, 12600 feet is equal to 12600/5280 = 2.3863 recurring (that is, 2.38636363..) miles.

12600 sq ft = approx 0.29 acres.

12600 seconds = 3 hours 30 minutes.

23 x 32 x 52 x 71 = 12600

12600 ft2 Ã· 43560.17 ft2/acre = 0.289255 acre

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