Re: Bitcoin challenge transaction: ~100 BTC total bounty to solvers!
One more participant in the digital lottery 
For 80 years (like for the whole your life) it just 0.031% [but actually some less because your random could generate the same keys during these 80 years]
For comparison, there are 16,000,000 thunder storms annually, 25,000,000 cloud lightings come to earth. Such lightings kill approximately 55 humans during a year. Considering the average life of 80 years, te chances to be killed by a storm lighting are 1:3000, so it is like 0.033%, which is more than the chances to find a key for #64 with the speed 1130MKey/s for 80 years
For 80 years (like for the whole your life) it just 0.031% [but actually some less because your random could generate the same keys during these 80 years]
For comparison, there are 16,000,000 thunder storms annually, 25,000,000 cloud lightings come to earth. Such lightings kill approximately 55 humans during a year. Considering the average life of 80 years, te chances to be killed by a storm lighting are 1:3000, so it is like 0.033%, which is more than the chances to find a key for #64 with the speed 1130MKey/s for 80 years
Perhaps these 55 people thought so too?
Here is the list of some of them (not all 55 for every year, but some famous people):
https://www.ranker.com/list/famous-people-who-died-of-lightning/reference