Reserving 565686, 566904, 566742, 567540, 567000.

561576 done

Abandoning 563040 at 108 digits, 2^6*3*127
Abandoning 562518 at 110 digits, 2^3*3, after some attractive wiggles

Taking 562698, 563412

After much pain and suffering, I am releasing 555576, c100.

563064, 563232 and 563292 Done

reserving 563560, 563808, 563850

563412 got to C108 without losing 2^3*3*5; abandoning, taking 564096 instead

Reserving 565230

564240 is done.

Reserving 565800

Reserving 565296

557604, 557856, 557886 done

Reserving 564096, 565308, 565344

(557604 looked promising, have done i741 - i4416, now 2^4*31, unreserve it)

560520 at C118, 2^3*3*5 pushing it up

Reserve 569928

(RobertS: I'm already running 564096; see post #23)