Our “4000 Chebyshev Bias Tester” completed testing all primes up to 10*10¹⁴  and found 5 first and previously unknown sign-changing zones for ∆{24;19,1}(x), where the value of ∆{24;19,1}(x) equals to -1.

The first prime of these zones is equal to 706,866,045,116,113 and is little bit below 7.15*10¹⁴, predicted by Americam mathematicians Richard H. Hudson and Kevin Ford back in 2001.

We will publish our results in the near future.