3 ms·

The article claims that to be the number of primes less than 10e10, not that it is a prime itself.

• lmilcin 6y ago
  Oops. You are right.
  • smitty1e 6y ago
    Let us show Mersenne toward all, and be Stern with none.
• jtbayly 6y ago
  Thank you. I misunderstood as well.