- n=600-700k, 15k left (3232, 3418, 8638, 9943, 15157, 15424, 15901, 17277, 18328, 19081, 23586, 24697, 25494, 26923, 27877)
- runtime 1h33min-2h20min (AVX@3.9Ghz)

16749*52^122358+1 found by grcpool.com-2
6891*52^124872+1 found by Brian Whipp
27082*52^131415+1 found by grcpool.com
16273*52^134573+1 found by CharityEngine1
6147*52^157091+1 found by CharityEngine1
27082*52^160387+1 found by CharityEngine1
15636*52^186996+1 found by CharityEngine1
28198*52^189440+1 found by CharityEngine1
10188*52^208273+1 found by PDW
5619*52^231302+1 found by grcpool.com-3
28198*52^305828+1 found by grcpool.com (TOP5000)
2386*52^308276+1 found by CharityEngine2 (TOP5000)
24328*52^310932+1 found by killik (TOP5000)
23902*52^382687+1 found by PDW (TOP5000)
23902*52^400831+1 found by CharityEngine1 (TOP5000)
6891*52^423132+1 found by CharityEngine1 (TOP5000)
5619*52^424922+1 found by Hollensted (TOP5000)
2386*52^469972+1 found by Doug (TOP5000)
25492*52^638823+1 found by Science United (TOP5000)