is 2 25305829 - 1
has 7617814 decimal digits
takes 21.686 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LEB4BF405B65C58F9double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275302.377366.6667%3800003800000.47221.0039%302.849567.0013%0.3346%
PrimeNet2660.583662.1212%11000040000000.40004.9857%0.983664.0097%1.8885%
GPU722709.442564.2857%18000055000000.58383.7387%10.026365.6210%1.3353%
Difference+5+292.9348+2.3810%+200000-5120000-0.1116-2.7349%+292.8232+1.3803%+1.3803%

Known prime factors (1 factor, 90.7 bits, 0.00035827% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2530582919606280478946288293678992472890.66338738664674740132587
32 × 1901 × 4649 × 34033 × 14310679
2021-12-25340331431067915,242,4061.00881.8095

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2005-08-01T00:00:00curtiscv4_computers380000380000---0.472--1.004%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-12-25T00:13:50Anton RepkoDeskMini200000012000000027P-12890.66311.61


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-08-12T00:00:00Net_Forcev4_computers21256--0.000--
2001-08-24T00:00:00Mattv4_computers21258--0.002--
2004-01-18T00:00:00markrv4_computers21262--0.024--
2004-07-02T00:00:00ANONYMOUSv4_computers21267--1.174--
2011-12-08T14:12:00Carsten KossendeyManual testing267268--1.181--
2012-01-02T22:42:00Carsten KossendeyManual testing268269--2.362--
2017-03-20T02:00:03ramgeisManual testing269270--4.725--
2021-06-10T08:58:28mikrManual testing270271--9.450--
2021-08-28T19:52:06TheJudgerManual testing271272--18.90--
2021-08-28T19:52:06TheJudgerManual testing272273--37.80--
2021-10-01T19:41:31TheJudgerManual testing273274--75.60--
2021-10-17T21:22:04TheJudgerManual testing274275--151.2--


ECM factoring results:
No ECM results for M25305829


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-08-16T00:00:00curtiscv4_computersEB4BF405B65C58F921.69
2012-05-07T17:24:00DubslowGravemindEB4BF405B65C58F921.69


PRP results:
No PRP results for M25305829


P-1 factor-bounds graph:
B1 = 2000000, B2 = 120000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 380000 (P-1 stage 1)
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TF factor-bounds graph:
275
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2100
Last modified: 2021-12-25T00:13:50+00:00