10^n + delta = p ^2 * q log_2(delta)
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10^19 + 93815391 = 2150209 ^2 * 2162911 26.4833
10^22 + 782939691 = 15634603 ^2 * 40909699 29.5443
10^25 + 44473963077 = 164317583 ^2 * 370366693 35.3722
10^28 + 192056856217 = 1417504619 ^2 * 4976809697 37.4827
10^31 + 1903633770933 = 13116605573 ^2 * 58124212477 40.7919
10^34 + 4064603456403 = 245902790183 ^2 * 165376229827 41.8863
10^37 + 1483238923930317 = 1102689419521 ^2 * 8224198521037 50.3977
10^40 + 1968920864061936111233721191891321 = 1711540759862310229370048307 ^2 * 3413701221980995565738654929 5453.12833187 (???)