BigPrimes.net

Perfect Numbers

Rank Perfect Number Digits Discoverer Downloads
49 274207281 × (274207281-1) 44677235 2016 Cooper, Woltman, Kurowski, Blosser et al. ZIP
48 257885161 × (257885161-1) 34850340 2013 Cooper, Woltman, Kurowski, et al. ZIP
47 243112609 × (243112609-1) 25956377 2008 Smith, Woltman, Kurowski, et al. ZIP
46 242643801 × (242643801-1) 42643801 2009 Strindmo, Woltman, Kurowski, et al. ZIP
45 237156667 × (237156667-1) 22370543 2008 Elvenich, Woltman, Kurowski, et al. ZIP
44 232582656 × (232582657-1) 19616714 2006 Cooper, Boone, Woltman, Kurowski, et al. TXT ZIP
43 230402456 × (230402457-1) 18304103 2005 Cooper, Boone, Woltman, Kurowski, et al. TXT ZIP
42 225964950 × (225964951-1) 15632458 2005 Nowak, Woltman, Kurowski, et. al. TXT ZIP
41 224036582 × (224036583-1) 14471465 2004 Findley, Woltman, Kurowski, et. al. TXT ZIP
40 220996010 × (220996011-1) 12640858 2003 Shafer, Woltman, Kurowski, et. al. TXT ZIP
39 213466916 × (213466917-1) 8107892 2001 Cameron, Woltman, Kurowski, et. al. TXT ZIP
38 26972592 × (26972593-1) 4197919 1999 Hajratwala, Woltman, Kurowski, et. al. TXT ZIP
37 23021376 × (23021377-1) 1819050 1998 Clarkson, Woltman, Kurowski, et. al. TXT ZIP
36 22976220 × (22976221-1) 1791864 1997 Spence, Woltman, et. al. TXT ZIP
35 21398268 × (21398269-1) 841842 1996 Armengaud, Woltman, et. al. TXT ZIP
34 21257786 × (21257787-1) 757263 1996 Slowinski&Gage TXT
33 2859432 × (2859433-1) 517430 1994 Slowinski&Gage TXT
32 2756838 × (2756839-1) 455663 1992 Slowinski&Gage TXT
31 2216090 × (2216091-1) 130100 1985 Slowinski TXT
30 2132048 × (2132049-1) 79502 1983 Slowinski TXT
29 2110502 × (2110503-1) 66530 1988 Colquitt&Welsh TXT
28 286242 × (286243-1) 51924 1982 Slowinski TXT
27 244496 × (244497-1) 26790 1979 Nelson&Slowinski TXT
26 223208 × (223209-1) 13973 1979 Noll TXT
25 221700 × (221701-1) 13066 1978 Noll&Nickel TXT
24 219936 × (219937-1) 12003 1971 Tuckerman TXT
23 211212 × (211213-1) 6751 1963 Gillies TXT
22 29940 × (29941-1) 5985 1963 Gillies TXT
21 29688 × (29689-1) 5834 1963 Gillies TXT
20 24422 × (24423-1) 2663 1961 Hurwitz TXT
19 24252 × (24253-1) 2561 1961 Hurwitz TXT
18 23216 × (23217-1) 1937 1957 Riesel TXT
17 22280 × (22281-1) 1373 1952 Robinson TXT
16 22202 × (22203-1) 1327 1952 Robinson TXT
15 21278 × (21279-1) 770 1952 Robinson TXT
14 2606 × (2607-1) 366 1952 Robinson TXT
13 2520 × (2521-1) 314 1952 Robinson TXT
12 2126 × (2127-1) 77 1876 Lucas TXT
11 2106 × (2107-1) 65 1914 Powers TXT
10 288 × (289-1) 54 1911 Powers TXT
9 260 × (261-1) 37 1883 Pervushin TXT
8 230 × (231-1) 19 1772 Euler TXT
7 218 × (219-1) 12 1588 Cataldi TXT
6 216 × (217-1) 10 1588 Cataldi TXT
5 212 × (213-1) 8 1456 ? TXT
4 26 × (27-1) 4 ? TXT
3 24 × (25-1) 3 ? TXT
2 22 × (23-1) 2 ? TXT
1 21 × (22-1) 1 ? TXT