N=(2837^1429-1)/2836

Portion of N-1 factored: 31.13%
Portion used in proof: 31.10%

Factorization of N-1:
2837 = 2837
phi_2 = 2 * 3 * 11 * 43
phi_3 = 7 * 13 * 103 * 859
phi_4 = 2 * 5 * 804857
phi_6 = 3 * 151 * 17761
phi_7 = 29 * 17985028326092599703
phi_12 = 229 * 2689 * 105198853
phi_14 = 379 * 164893 * 8339913188419
phi_17 = 8297 * 3395889978851 * 625212684514048309513694391203185033123
phi_21 = 7 * 1696300052816713 * 22885384036602128191725079
phi_28 = 16633 * 2098281589128197677 * 7788926722143420757
phi_34 = 15654823049 * 123005245357 * 9141648590377160285379738923910877
phi_42 = 211 * 435541 * 2959058734872417984969161393350279
phi_51 = 13669 * 838535667433 * 572782525004363591227 * p74
phi_68 = 131581 * 124913872136637406490202260553378880648384103173 * p59
phi_84 = 337 * 421 * 11875980056324744809 * 49768037866362309313 * 881235812237209107281820250241053846309
phi_102 = 1073573740648326899646557085517302801769 * p72
phi_119 = 56677565141 * c321
phi_204 = 7549 * 288046700253103821493956517 * 2206866543369233905490878308698802049 * c155
phi_238 = 239 * c330
phi_357 = 1429 * 14281 * 207061 * 964046525653 * 288471499616959 * c624
phi_476 = 3250129 * 181255472323887977 * 1932746326449034321 * p621
phi_714 = c663
phi_1428 = 1433467481942057445997 * c1305