Marin Mersenne2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet ECM Progress

ECM on Fermat numbers

Digits in factor 25 30 35 40 45 50 55 60 65
Bound #1 50,000 250,000 1,000,000 3,000,000 11,000,000 44,000,000 110,000,000 260,000,000 800,000,000
Curves to test 280 640 1,580 4,700 9,700 17,100 46,500 112,000 360,000
4096 Done Done Done Done Done Done Done Done 50,639
8192 Done Done Done Done Done Done Done 60,909
16384 Done Done Done Done Done Done Done 28,397
32768 Done Done Done Done Done Done 31,362
65536 Done Done Done Done Done Done 14,682
131072 Done Done Done Done Done Done 6,892
262144 Done Done Done Done Done 8,134
524288 Done Done Done Done Done 3,854
1048576 Done Done Done Done 4,568
2097152 Done Done Done Done 2,005
4194304 Done Done Done 3,593
8388608 Done Done Done 1,678
16777216 Done Done Done 801
33554432 Done Done 334
67108864 Done 77
134217728 84
268435456 42
536870912 8

ECM on Mersenne numbers with no known factors

Exponent range:
 
Digits in factor 25 30 35 40 45 50 55 60 65
Bound #1 50,000 250,000 1,000,000 3,000,000 11,000,000 44,000,000 110,000,000 260,000,000 800,000,000
Curves to test 280 640 1,580 4,700 9,700 17,100 46,500 112,000 360,000
1277 Done Done Done Done Done Done Done Done 53,292
1619 Done Done Done Done Done Done Done Done 39,094
1753 Done Done Done Done Done Done Done Done 63,314
2137 Done Done Done Done Done Done Done Done 40,541
2267 Done Done Done Done Done Done Done Done 39,259
2273 Done Done Done Done Done Done Done 52,225
2357 Done Done Done Done Done Done Done 65,459
2377 Done Done Done Done Done Done Done 51,509
2423 Done Done Done Done Done Done 14,281
2477 Done Done Done Done Done Done 29,189
2521 Done Done Done Done Done Done 28,198
2557 Done Done Done Done Done Done 9,768
2671 Done Done Done Done Done Done 9,176
2713 Done Done Done Done Done Done 15,328
2719 Done Done Done Done Done Done 9,000
2851 Done Done Done Done Done Done 9,259
3049 Done Done Done Done Done Done 9,305
3607 Done Done Done Done Done Done 8,040
3673 Done Done Done Done Done Done 8,574
3691 Done Done Done Done Done Done 9,336
3847 Done Done Done Done Done Done 8,268
3881 Done Done Done Done Done Done 8,147
3919 Done Done Done Done Done Done 8,300
4007 Done Done Done Done Done Done 7,954
4049 Done Done Done Done Done Done 8,151
4111 Done Done Done Done Done Done 13,005
4159 Done Done Done Done Done Done 7,095
4261 Done Done Done Done Done Done 7,458
4363 Done Done Done Done Done Done 7,213
4567 Done Done Done Done Done Done 7,558
4583 Done Done Done Done Done Done 7,222
4591 Done Done Done Done Done Done 7,002
4703 Done Done Done Done Done Done 7,851
4721 Done Done Done Done Done Done 7,078
5443 Done Done Done Done Done Done 7,007
5471 Done Done Done Done Done Done 7,216
5503 Done Done Done Done Done Done 6,840
5839 Done Done Done Done Done 3,848
5879 Done Done Done Done Done 4,733
5923 Done Done Done Done Done 4,814
6007 Done Done Done Done Done 4,447
6073 Done Done Done Done Done 4,359
6247 Done Done Done Done Done 4,336
6329 Done Done Done Done Done 4,181
6581 Done Done Done Done Done 4,092
6679 Done Done Done Done Done 3,883
6733 Done Done Done Done Done 3,881
6763 Done Done Done Done Done 3,864
6971 Done Done Done Done Done 3,674
7069 Done Done Done Done Done 3,849
7127 Done Done Done Done Done 3,781
7321 Done Done Done Done Done 3,482
7351 Done Done Done Done Done 3,686
7621 Done Done Done Done Done 3,256
8291 Done Done Done Done Done 3,212
8329 Done Done Done Done Done 3,326
8369 Done Done Done Done Done 3,137
8389 Done Done Done Done Done 2,916
8581 Done Done Done Done Done 3,005
8681 Done Done Done Done Done 3,058
8923 Done Done Done Done Done 3,170
8999 Done Done Done Done Done 3,298
9011 Done Done Done Done Done 2,797
9227 Done Done Done Done Done 2,867
9463 Done Done Done Done Done 3,128
9473 Done Done Done Done Done 2,783
9551 Done Done Done Done Done 2,816
9679 Done Done Done Done Done 2,833
9857 Done Done Done Done Done 2,807
9929 Done Done Done Done Done 3,231
10061 Done Done Done Done Done 2,771
10303 Done Done Done Done Done 2,846
10399 Done Done Done Done Done 2,782
10463 Done Done Done Done Done 3,018
10771 Done Done Done Done Done 2,800
10831 Done Done Done Done Done 2,697
11027 Done Done Done Done Done 2,425
11159 Done Done Done Done 7,576
11251 Done Done Done Done 5,913
11351 Done Done Done Done 6,120
11423 Done Done Done Done 5,155
11467 Done Done Done Done 4,839
11483 Done Done Done Done 4,929
11489 Done Done Done Done 4,832
11657 Done Done Done Done 4,727
11821 Done Done Done Done 4,738
11839 Done Done Done Done 4,849
12149 Done Done Done Done 4,750
12161 Done Done Done Done 4,205
12269 Done Done Done Done 3,888
12281 Done Done Done Done 3,889
12377 Done Done Done Done 3,956
12517 Done Done Done Done 3,749
12637 Done Done Done Done 4,084
13007 Done Done Done Done 2,884
13217 Done Done Done Done 3,089
13219 Done Done Done Done 2,905
13327 Done Done Done Done 2,894
13523 Done Done Done Done 2,881
13597 Done Done Done Done Done 3,716
13691 Done Done Done Done 2,928
13967 Done Done Done Done 2,784
14009 Done Done Done Done 4,054
14153 Done Done Done Done Done 3,630
14173 Done Done Done Done 2,651
14221 Done Done Done Done 2,351
14243 Done Done Done Done 3,097
14327 Done Done Done Done 2,356
14447 Done Done Done Done 2,424
14489 Done Done Done Done 2,435
14557 Done Done Done Done 2,545
14723 Done Done Done Done 2,664
14867 Done Done Done Done 2,530
14951 Done Done Done Done 2,515

ECM on Mersenne numbers with known factors

Exponent range:
 
Digits in factor 25 30 35 40 45 50 55 60 65
Bound #1 50,000 250,000 1,000,000 3,000,000 11,000,000 44,000,000 110,000,000 260,000,000 800,000,000
Curves to test 280 640 1,580 4,700 9,700 17,100 46,500 112,000 360,000
991 Done Done Done Done Done Done Done 24,352
1117 Done Done Done Done Done Done Done 49,054
1123 Done Done Done Done Done Done Done 76,176
1171 Done Done Done Done Done Done Done 47,232
1213 Done Done Done Done Done Done 13,723
1217 Done Done Done Done Done Done 11,239
1229 Done Done Done Done Done Done Done 29,902
1231 Done Done Done Done Done Done 18,532
1237 Done Done Done Done Done Done Done Done 38,922
1249 Done Done Done Done Done Done 15,048
1259 Done Done Done Done Done Done 9,797
1283 Done Done Done Done Done Done 9,790
1291 Done Done Done Done Done Done 25,239
1297 Done Done Done Done Done Done 9,731
1319 Done Done Done Done Done Done 11,976
1367 Done Done Done Done Done Done 11,381
1381 Done Done Done Done Done Done 9,358
1399 Done Done Done Done Done Done 9,237
1409 Done Done Done Done Done Done 10,365
1423 Done Done Done Done Done Done 9,996
1429 Done Done Done Done Done Done 10,615
1433 Done Done Done Done Done Done 11,220
1439 Done Done Done Done Done Done 12,310
1447 Done Done Done Done Done Done 12,287
1451 Done Done Done Done Done Done 12,320
1453 Done Done Done Done Done Done 24,244
1471 Done Done Done Done Done Done 6,874
1481 Done Done Done Done Done Done Done 33,867
1483 Done Done Done Done Done Done 10,077
1489 Done Done Done Done Done Done 10,826
1493 Done Done Done Done Done Done 6,862
1499 Done Done Done Done Done Done 8,946
1511 Done Done Done Done Done Done 7,379
1523 Done Done Done Done Done Done 7,372
1549 Done Done Done Done Done Done 11,168
1567 Done Done Done Done Done Done 10,967
1571 Done Done Done Done Done Done 10,929
1579 Done Done Done Done Done Done 8,961
1583 Done Done Done Done Done Done 10,058
1597 Done Done Done Done Done Done 22,269
1601 Done Done Done Done Done Done 8,931
1607 Done Done Done Done Done Done 8,963
1609 Done Done Done Done Done Done 8,973
1613 Done Done Done Done Done Done 8,998
1621 Done Done Done Done Done Done 8,982
1627 Done Done Done Done Done Done 7,024
1663 Done Done Done Done Done Done 7,010
1667 Done Done Done Done Done Done 6,999
1669 Done Done Done Done Done Done 10,648
1697 Done Done Done Done Done Done 7,008
1699 Done Done Done Done Done Done 6,852
1709 Done Done Done Done Done Done 6,851
1721 Done Done Done Done Done Done 6,891
1723 Done Done Done Done Done Done 6,851
1733 Done Done Done Done Done Done 6,851
1741 Done Done Done Done Done Done 6,852
1747 Done Done Done Done Done Done 6,851
1759 Done Done Done Done Done Done 6,852
1777 Done Done Done Done Done Done 10,107
1787 Done Done Done Done Done Done 11,598
1789 Done Done Done Done Done Done 6,858
1801 Done Done Done Done Done Done 7,221
1811 Done Done Done Done Done Done 7,395
1823 Done Done Done Done Done Done 7,352
1831 Done Done Done Done Done Done 7,346
1847 Done Done Done Done Done Done 7,341
1861 Done Done Done Done Done Done 7,880
1867 Done Done Done Done Done Done 7,889
1871 Done Done Done Done Done Done 7,889
1873 Done Done Done Done Done Done 7,954
1877 Done Done Done Done Done Done 7,889
1879 Done Done Done Done Done Done 7,889
1889 Done Done Done Done Done Done 7,889
1901 Done Done Done Done Done Done 7,896
1913 Done Done Done Done Done Done 8,183
1931 Done Done Done Done Done Done 9,105
1933 Done Done Done Done Done Done 8,983
1949 Done Done Done Done Done Done 8,982
1951 Done Done Done Done Done Done 11,525
1973 Done Done Done Done Done Done 12,406
1979 Done Done Done Done Done Done 12,191
1987 Done Done Done Done Done Done 11,718
1993 Done Done Done Done Done Done 10,623
1999 Done Done Done Done Done Done 10,426
2003 Done Done Done Done Done Done 10,811
2011 Done Done Done Done Done Done 11,655
2017 Done Done Done Done Done Done 12,468
2027 Done Done Done Done Done Done 10,988
2029 Done Done Done Done Done Done 10,989
2039 Done Done Done Done Done Done 10,988
2053 Done Done Done Done Done Done 10,974
2063 Done Done Done Done Done Done 11,283
2081 Done Done Done Done Done Done 11,282
2083 Done Done Done Done Done Done 12,195
2087 Done Done Done Done Done Done 11,951
2089 Done Done Done Done Done Done 12,194
2099 Done Done Done Done Done Done 12,195
2111 Done Done Done Done Done Done 12,195
2113 Done Done Done Done Done Done 11,435
2129 Done Done Done Done Done Done 6,853
2131 Done Done Done Done Done Done 6,851
2141 Done Done Done Done Done Done 6,851
2143 Done Done Done Done Done Done 6,851
2153 Done Done Done Done Done Done 6,852
2161 Done Done Done Done Done Done 6,852
2179 Done Done Done Done Done Done 7,336
2207 Done Done Done Done Done Done 7,370
2213 Done Done Done Done Done Done 7,270
2221 Done Done Done Done Done Done 7,034
2237 Done Done Done Done Done Done 9,878
2239 Done Done Done Done Done Done 10,205
2243 Done Done Done Done Done Done 6,856
2269 Done Done Done Done Done Done 7,760
2287 Done Done Done Done Done Done 9,090
2293 Done Done Done Done Done Done 7,170
2297 Done Done Done Done Done Done 7,170
2309 Done Done Done Done Done Done 7,027
2333 Done Done Done Done Done Done 7,418
2339 Done Done Done Done Done Done 6,840
2341 Done Done Done Done Done Done 7,170
2347 Done Done Done Done Done Done 7,192
2351 Done Done Done Done Done Done 7,192
2371 Done Done Done Done Done Done 7,192
2381 Done Done Done Done Done Done 8,658
2389 Done Done Done Done Done Done 6,912
2393 Done Done Done Done Done 14,226
2399 Done Done Done Done Done 15,568
2411 Done Done Done Done Done 15,443
2417 Done Done Done Done Done 11,660
2437 Done Done Done Done Done 7,508
2441 Done Done Done Done Done 7,201
2459 Done Done Done Done Done 11,148
2467 Done Done Done Done Done 5,182
2473 Done Done Done Done Done 3,346