This is in SageMath Version 6.6, Release Date: 2015-04-14 running on a MacBook. The following lines print 'equal', even though m and m1 do not appear equal to me!
m=540579833922455191419978421211010409605356811833049025*sqrt(1/2) m1=382247666339265723780973363167714496025733124557617743 if m == m1: print "equal" -- 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 post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.