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Von Neumann's method for generating pseudorandom numbers

1:01 PM · Jun 10, 2023

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Pavlos Papageorgiou

@PavlosProkopeas

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Jun 10

Because the low digits accumulate zeroes?

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Xor

@XorDev

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Jun 10

Start with 100 100*100 = 10,000 Take the middle three 000, 000*000 equals 0 forever

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Hayes

@TheBrownTown1

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Jun 10

Does this have any practical use other than being a fun fact?

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Rafael Reis

@raffareis

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Jun 10

If you find yourself in a desert island, and your laptop has no internet and no libraries and no stack overflow, you'll wish you knew this.

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CalBynary

@CalBynary

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Jun 10

Subscriber

Loop.

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Rafael Reis

@raffareis

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Jun 10

I've simulated this in c#, and this sequence gets stuck at "600" at some point. (AMA if you have suggestions i could try):

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Mario Caronna

@_LordPBA_

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Jun 11

Naaa it is impossible that is true rand.... Wait... Hmm... 🤔

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Mario Caronna

@_LordPBA_

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Jun 11

Ok is a pseudorandom

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Tristan Snowsill

@TMSnowsill

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Jun 10

I love it, because if the leading digit(s) is zero, the resulting number is less than n digits long. Does it actually meet rigorous criteria for uniform pseudorandom number generation?

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