Wiles gave an interview recently saying that he thinks Riemann hypothesis will be solved before the Birch/Swinnerton-Dyer conjecture
http://www.ams.org/journals/notices/201703/rnoti-p197.pdf
Those are the only two that are in the same realm so it's hard to compare which of the others might come first
>>8735650
the PDE one
>>8735672
Noether-Stokes does seem very likely.
>>8735650
[math]P = NP[/math]
>>8735685
N = 1
>>8735706
P = 0