The following seems fishy:
`` sage: K.<a> = QuadraticField(-*1*) sage: K.factor(*13*) (Fractional ideal (-3*a - 2)) * (Fractional ideal (2*a + 3)) `` -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/71469fc7-dcca-4540-bb2a-a6d421f8560an%40googlegroups.com.