N=(64758^15373-1)/64757

Portion of N-1 factored: 32%
Portion used in proof:  30.44%

Factorization of N-1:
64758 = 2 * 3 * 43 * 251
phi_2 = 31 * 2089
phi_3 = 18127 * 231349
phi_4 = 5 * 13 * 89 * 277 * 2617
phi_6 = 379 * 1831 * 6043
phi_7 = 7 * 21439956413 * 491411519692496873
phi_9 = 19 * 2503 * 14887 * 6256729 * 16649131407787
phi_12 = 37 * 38775937 * 12257719657
phi_14 = p29
phi_18 = 523 * 3583 * p23
phi_21 = 276739 * 22121779 * 826188560443 * p34
phi_28 = 3221 * p55
phi_36 = 3673 * 10440037 * 1850919169933 * 174413372650381 * p21
phi_42 = 39284796144367177520383 * p36
phi_61 = 4027 * 5831120679203 * c273
phi_63 = 127 * 12485181398111291180690345737 * p144
phi_84 = 28309 * 10157323757062181258213089 * 545472729341640713521735059493242415777 * p48
phi_122 = 9631169 * 5320440212247592854549741989513209 * c248
phi_126 = 8443 * c170
phi_183 = 367 * 14048680519 * 263103031236993979 * c548
phi_244 = 6812758351870578039950141989167812368081097 * c535
phi_252 = 269641 * 3026343601 * 34142824297 * 24390659056542157 * 20601716952347189754883201 * 1428988856229560985931153 * c256
phi_366 = 20067049 * 36830474966419 * c557
phi_427 = 24547903803085601 * c1716
phi_549 = c1733
phi_732 = 733 * 114193 * 49516141 * 692606476912052991741553 * c1116
phi_854 = 1709 * 25621 * 17162839 * c1718
phi_1098 = 6406502797 * p1723
phi_1281 = 6991098493 * 90830916499 * 380351939725844656291 * 16926079344813329760888484798934047 * c3389
phi_1708 = 2280185516192669 * 13288877187471904803440906842369 * c3418
phi_2196 = c3465
phi_2562 = c3465
phi_3843 = 3881184049 * 12182267800670311 * 4404692881 * 11995382684138239 * 521306274005467993007029 * 196942476235596367499051473 * c10291
phi_5124 = 15373 * 23421788127708013 * c6908
phi_7686 = 7687 * 32780791 * 203348503 * c10373
phi_15372 = 3766141 * 330344281 * p20770