is 2 25301399 - 1
has 7616481 decimal digits
takes 21.682 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L28497803E559E3BDdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275302.430366.6667%3800003800000.47221.0038%302.902467.0013%0.3346%
PrimeNet2660.583762.1212%11000040000000.40004.9855%0.983764.0097%1.8885%
GPU722709.444264.2857%18000055000000.58383.7387%10.028065.6209%1.3352%
Difference+5+292.9861+2.3810%+200000-5120000-0.1116-2.7348%+292.8744+1.3803%+1.3803%

Known prime factors (1 factor, 78.7 bits, 0.00031090% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
253013994785137800555870186224312478.6639456271174087785
34 × 5 × 31 × 53 × 6991 × 2032769
2021-11-02699120327693,008.70.14580.2570

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-08-06T00:00:00ANONYMOUSv4_computers380000380000---0.472--1.004%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-11-02T11:34:48Anton RepkoDeskMini200000012000000027P-12478.66311.61


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--
2004-04-20T00:00:00Team Prime Ribv4_computers21267--1.174--
2016-01-04T21:26:35VictordeHollanderManual testing267268--1.181--
2017-05-29T00:27:28ramgeisManual testing268269--2.363--
2017-05-29T00:27:28ramgeisManual testing269270--4.726--
2021-06-09T18:30:17mikrManual testing270271--9.451--
2021-08-28T19:11:30TheJudgerManual testing271272--18.90--
2021-08-28T19:11:30TheJudgerManual testing272273--37.80--
2021-10-01T19:59:39TheJudgerManual testing273274--75.61--
2021-10-17T20:53:20TheJudgerManual testing274275--151.2--


ECM factoring results:
No ECM results for M25301399


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-10-03T00:00:00ANONYMOUSv4_computers28497803E559E3BD21.68
2011-03-18T08:55:00Patrik Johanssoneta28497803E559E3BD21.68


PRP results:
No PRP results for M25301399


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:
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Last modified: 2021-11-02T11:34:48+00:00