Instead of Ming crypto coins, you can mine prime numbers for profit. The last one just paid $3,000.
Anyone can start searching for large Mersenne primes by downloading a free program. If you strike it lucky, not only is the discovery attributed to you, there’s also a cash prize. Proving that M77232917 is prime took Pace’s computer six days of non-stop computation. Four other computers then verified the result.
https://www.newscientist.com/article...illion-digits/