is 2 25304527 - 1
has 7617422 decimal digits
takes 21.685 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LF08A24753C054F94double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275302.392966.6667%23500011162500.35171.4842%302.744567.1614%0.4947%
PrimeNet2660.583662.1212%11000040000000.40004.9856%0.983764.0097%1.8885%
GPU722709.443064.2857%18000055000000.58383.7387%10.026865.6210%1.3353%
Difference+5+292.9499+2.3810%+55000-4383750-0.2322-2.2545%+292.7177+1.5404%+1.5404%

Known prime factors (1 factor, 94.7 bits, 0.00037431% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
25304527325588949455847542130902237932994.717643341306984018199848
23 × 32 × 151 × 132247 × 437743 × 1022179
2021-12-254377431022179224,021,4890.58351.1070

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-08-06T00:00:00aschloeglv4_computers2350001116250---0.352--1.484%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-12-25T00:13:27Anton RepkoDeskMini2000000200000027P-12994.7173.777


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--
2004-04-20T00:00:00ANONYMOUSv4_computers21267--1.174--
2016-01-04T21:26:36VictordeHollanderManual testing267268--1.181--
2017-05-29T00:27:29ramgeisManual testing268269--2.362--
2017-05-29T00:27:29ramgeisManual testing269270--4.725--
2021-06-10T08:58:25mikrManual testing270271--9.450--
2021-08-28T20:02:39TheJudgerManual testing271272--18.90--
2021-08-28T20:02:39TheJudgerManual testing272273--37.80--
2021-10-01T19:43:50TheJudgerManual testing273274--75.60--
2021-10-17T20:35:28TheJudgerManual testing274275--151.2--


ECM factoring results:
No ECM results for M25304527


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-10-03T00:00:00aschloeglv4_computersF08A24753C054F9421.68
2011-04-15T03:56:00acg3xptest3F08A24753C054F9421.68


PRP results:
No PRP results for M25304527


P-1 factor-bounds graph:
B1 = 2000000 (P-1 stage 1)
B1 = 235000, B2 = 1116250 (P-1 stage 2)
B1 = 235000 (P-1 stage 1)
104
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107
104
105
106
107
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
262
258
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2100
Last modified: 2021-12-25T00:13:27+00:00