is 2 1619 - 1
has 488 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L3F964611757CE4E0double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2669,121.950683.3333%3790662020300303252961624000593.607531.2695%9,715.5580114.6028%42.1028%
PrimeNet2400.000172.5000%500100000.00001.8369%0.000174.3369%1.8369%
GPU722440.001475.0000%500100000.00000.7097%0.001475.7097%0.7097%
Difference+22+9,121.9491+8.3333%+3790662019800+303252961614000+593.6075+30.5597%+9,715.5566+38.8931%+38.8931%

Known prime factors:
No known factors for M1,619

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-02-11T00:00:00ANONYMOUSv4_computers100001000000---1.88768e-6--0.263%
2001-02-11T00:00:00ANONYMOUSv4_computers1000000100000000---0.000--3.696%
2001-05-20T00:00:00ANONYMOUSv4_computers30000000004290000000---0.091--10.729%
2002-05-25T00:00:00ANONYMOUSv4_computers10737418244290000000---0.037--10.764%
2002-08-03T00:00:00ANONYMOUSv4_computers21474836484290000000---0.067--10.762%
2002-09-14T00:00:00ANONYMOUSv4_computers32212254724290000000---0.097--10.719%
2002-12-25T00:00:00ANONYMOUSv4_computers42900000002147483647---0.127--10.671%
2008-11-08T14:38:00David Campeau1000000100000000---0.000--3.696%
2008-11-08T14:41:00David Campeau100000001000000000---0.002--7.062%
2008-11-08T14:55:00David Campeau10000000010000000000---0.019--11.210%
2008-11-08T15:23:00David Campeau11000000011000000000---0.021--11.392%
2008-11-09T07:36:00David Campeau5000000000500000000000---0.944--18.878%
2008-12-07T13:44:00Matthias WurtingerWUR_E66001000000000020000000000---0.311--13.369%
2008-12-09T22:35:00Matthias WurtingerWUR_E6600300000000002147483647---0.886--13.923%
2009-05-31T17:24:00James Hintznewestmember33000000000330000000000---1.452--18.501%
2013-04-02T11:51:00Le ComteS76110000000000010000000000000---18.88--24.783%
2015-07-08T02:07:00MadPooManual testing121010068346910000000000000---49.87--24.750%
2016-02-23T11:31:28James Hintz08_04_201420921269467401.673701557392E+1412---327.6--30.170%
2016-09-28T17:07:56James Hintz04_29_201637906620203003.03252961624E+1412---593.6--31.269%
2017-01-25T13:33:28ANONYMOUSManual testing30100000000012---0.002--0.000%
unknown3790662020300303252961624000---593.6--31.269%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-09-14T00:00:00ANONYMOUSv4_computers250251--0.093--
1998-07-05T00:00:00ANONYMOUSv4_computers250252--0.278--
1999-09-14T00:00:00ANONYMOUSv4_computers252253--0.371--
1999-12-15T00:00:00ANONYMOUSv4_computers253254--0.741--
2000-01-25T00:00:00ANONYMOUSv4_computers254255--1.482--
2000-07-17T00:00:00ANONYMOUSv4_computers?256--5.929--
2002-09-07T00:00:00Alex Kruppav4_computers?257--11.86--
2002-09-14T00:00:00Alex Kruppav4_computers?257--11.86--
2002-09-29T00:00:00Alex Kruppav4_computers?257--11.86--
2002-10-19T00:00:00Alex Kruppav4_computers?257--11.86--
2010-12-18T19:20:00monstManual testing258260--71.15--
2014-04-04T04:15:00Sid & AndyManual testing260261--94.87--
2015-06-06T04:00:00snme2pm1G1261262--189.7--
2016-05-18T04:08:44snme2pm1G1262263--606.3--
2017-11-15T13:38:14snme2pm1g10263264--1,213--
2018-06-06T03:51:27Andriy MakukhaManual testing264265--2,308--
2020-12-22T08:39:21Ruslan BorisovManual testing265266--4,616--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
120500501.75443e-6
120500000001,1500.079
800800006000.000
8000800001,0000.002
8000800000258.49674e-5
9999999900208.49589e-5
11000110000010,0000.047
50000500000010,1510.216
8000080000200.000
800008000002000.005
8000080000004500.015
2500002500000010,0011.062
8000008000000910.022
800000800000001710.058
9999999999999950.002
10000001000000006010.255
300000030000000010.001
8000000800000000140.048
100000001000000001,0063.023
11000000110000000010.005
44000000440000000010.019
110000000110000000001,00246.83
1100000007762783965408,1288,976
180000000180000000321.659
260000000260000000001,662183.6
260000000317855988451625,100112,122
8000000008000000007417.05
800000000800000000030072.11
800000000800000000004,2701,451
8000000002599257376717813469.9
8000000003898867278307810541.1
80000000050000000000000201,386
85000000085000000000377136.1
8500000001489938239791826,892560,247
850000000158926282515162,00044,412
88000000088000000092.281
8800000001320000000112.795
8800000008800000000010.374
9000000009000000004110.63
900000000300000000000006250.3
9000000003500000000000010486.2
90000000051984853991088251,802
999999999999999999001,213515.3
9999999999999999999931.275
1000000000100000000000208.497
100000000021400000000063.494
1200000000120000000062.074
123456789066600000000000192.39
1320000000132000000093.422
2400000000240000000042.765
24000000002400000000003535.69
290000000029000000001512.53
2900000000290000000000164202.1
29000000003899076281101815820.7
3000000000300000000032.592
400000000040000000000035.098
10000000000100000000000014.248


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-04-11T05:57:00MadPooManual testing3F964611757CE4E03.29646e-8


PRP results:
Exponent "1619" not found


P-1 factor-bounds graph:
B1 = 3790662020300, B2 = 3.03252961624E+14 (stage 2)
B1 = 2092126946740, B2 = 1.673701557392E+14 (stage 2)
B1 = 3790662020300 (stage 1)
B1 = 2092126946740 (stage 1)
B1 = 1210100683469, B2 = 10000000000000 (stage 2)
B1 = 1210100683469 (stage 1)
B1 = 100000000000, B2 = 10000000000000 (stage 2)
B1 = 100000000000 (stage 1)
B1 = 33000000000, B2 = 330000000000 (stage 2)
B1 = 33000000000 (stage 1)
B1 = 5000000000, B2 = 500000000000 (stage 2)
B1 = 30000000000 (stage 1)
B1 = 10000000000, B2 = 20000000000 (stage 2)
B1 = 10000000000 (stage 1)
B1 = 5000000000 (stage 1)
B1 = 4290000000 (stage 1)
B1 = 3221225472, B2 = 4290000000 (stage 2)
B1 = 3221225472 (stage 1)
B1 = 3000000000, B2 = 4290000000 (stage 2)
B1 = 3000000000 (stage 1)
B1 = 2147483648, B2 = 4290000000 (stage 2)
B1 = 2147483648 (stage 1)
B1 = 1073741824, B2 = 4290000000 (stage 2)
B1 = 1073741824 (stage 1)
B1 = 110000000, B2 = 11000000000 (stage 2)
B1 = 100000000, B2 = 10000000000 (stage 2)
B1 = 110000000 (stage 1)
B1 = 100000000 (stage 1)
B1 = 10000000, B2 = 1000000000 (stage 2)
B1 = 30, B2 = 1000000000 (stage 2)
B1 = 10000000 (stage 1)
B1 = 1000000, B2 = 100000000 (stage 2)
B1 = 1000000 (stage 1)
B1 = 10000, B2 = 1000000 (stage 2)
B1 = 30 (stage 1)
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TF factor-bounds graph:
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Last modified: 2021-01-23T12:48:31+00:00