Isn't this based on an expression from Abigail then at Perlmonks? https://www.masteringperl.org/2013/06/how-abigails-prime-number-checker-works/ https://www.mas

Isn't this based on an expression from Abigail then at Perlmonks? https://www.masteringperl.org/2013/06/how-abigails-prime-number-checker-works/ https://www.masteringperl.org/2013/06/how-abigails-prime-num...