Done with 719880, 118 digits, 2^4. No driver but possible c113 next (passed some ecm)

[QUOTE=Mini-Geek;194955]I guess you didn't notice that it also has a factor of 7. So it's not the 2^2 downguide, it's the 2^2*7 perfect number driver. The extra (though quite unstable) factors of 3, 5, and 7 also make it grow much quicker than it otherwise would.[/QUOTE]
thank you, that makes sense.

717480 merges with earlier sequence 695722!
reserving 717720

Done with 720270, index 1594, 102 digits, driver 2^3 * 3 * 5

done with 717720
reserving 717912

Done with [code]715992 1235. 2^2 * 3 * 7 c98 sz 100[/code]

Taking 721280

[quote=Batalov;194976]Will take 720126 722708 723192 724626[/quote]
Done

done with 717912
reserving 718032

done with 718032
reserving 718152

Reserving 722142, 722250, 722430, 722688, 722800, 722904

done with 718152
reserving 718284

done with 718284
reserving 718332