gives a representation of the internal state of the default pseudorandom generator.
$RandomGeneratorState
gives a representation of the internal state of the default pseudorandom generator.
Details
- $RandomGeneratorState returns a RandomGeneratorState object that can be passed to BlockRandom , SeedRandom and related functions.
Examples
open all close allBasic Examples (1)
Get the current state of the pseudorandom generator:
Applications (1)
Create a version of BlockRandom that refuses to run if the current random state cannot be restored:
Activate a randomness generation method with no restorable state:
Because this method cannot be seeded, BlockRandom cannot give reproducible results:
The function will refuse to evaluate:
Activate a randomness generation method that possesses a restorable state:
The function restores the random state at the end of each evaluation:
Hence the following result matches the previous result:
Properties & Relations (4)
$RandomGeneratorState returns a RandomGeneratorState object:
Using RandomInteger , RandomReal and related functions changes $RandomGeneratorState :
Use RandomComplex :
The state has changed as indicated by the new hash:
The value of $RandomGeneratorState can be restored with SeedRandom :
Restoring $RandomGeneratorState after a computation is effectively the same as BlockRandom :
Related Guides
History
Text
Wolfram Research (2020), $RandomGeneratorState, Wolfram Language function, https://reference.wolfram.com/language/ref/$RandomGeneratorState.html.
CMS
Wolfram Language. 2020. "$RandomGeneratorState." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/$RandomGeneratorState.html.
APA
Wolfram Language. (2020). $RandomGeneratorState. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/$RandomGeneratorState.html
BibTeX
@misc{reference.wolfram_2025_$randomgeneratorstate, author="Wolfram Research", title="{$RandomGeneratorState}", year="2020", howpublished="\url{https://reference.wolfram.com/language/ref/$RandomGeneratorState.html}", note=[Accessed: 08-January-2026]}
BibLaTeX
@online{reference.wolfram_2025_$randomgeneratorstate, organization={Wolfram Research}, title={$RandomGeneratorState}, year={2020}, url={https://reference.wolfram.com/language/ref/$RandomGeneratorState.html}, note=[Accessed: 08-January-2026]}