package main import ( "fmt" "math/big" ) func factors(n *big.Int) (fs []big.Int) { zero := big.NewInt(0) one := big.NewInt(1) two := big.NewInt(2) four := big.NewInt(4) six := big.NewInt(6) wheel := [11]*big.Int{one,two,two,four,two,four,two,four,six,two,six} w := 0 f := two z := zero z.Mul(f, f) for z.Cmp(n) <= 0 { fmt.Println(f, n) z.Mod(n, f) for z.Cmp(zero) == 0 { fmt.Println(f, z, n) fs = append(fs, *f) n.Div(n, f) z.Mod(n, f) } f.Add(f, wheel[w]) w += 1 if w > 11 { w = 3 } z.Mul(f, f) } fs = append(fs, *n) return fs } func main() { fmt.Println(factors(big.NewInt(13290059))) }
Standard input is empty
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