You can easily 51% any and every coin for less than their market cap if you calculate just the cost of running/renting the hardware for a day. (Though really you don't even need it for that long)
I'm not sure if you would run into the problem of availability of hardware at some point, but if you're spending ~$76 billion to rent servers for a day, I'm sure you can figure out the details later.
But logically, 51% of the network cannot exceed the value of the network. You lose by a huge margin if you are spending more on protecting your money, than money you actually have.
I'm not sure if you would run into the problem of availability of hardware at some point, but if you're spending ~$76 billion to rent servers for a day, I'm sure you can figure out the details later.
Someone ran the calculations (From Aug 1st of 2017) here: https://freedomnode.com/blog/86/cost-of-51-attack-and-securi...
But logically, 51% of the network cannot exceed the value of the network. You lose by a huge margin if you are spending more on protecting your money, than money you actually have.