Ok, von Pollard Rho lese ich im PDF auch was:
https://cran.r-project.org/web/packages/RcppBigIntAlgos/RcppBigIntAlgos.pdf
> primeFactorizeBig(a, namedList = FALSE, showStats = TRUE,
skipPolRho = FALSE, skipECM = TRUE, nThreads = 8)
Summary Statistics for Factoring:
927472633854645814175599
| Pollard Rho Time |
|--------------------|
| 1ms |
| Total Time |
|--------------------|
| 1ms |
Big Integer ('bigz') object of length 3:
[1] 1087 438785761 2113725458503759