is 2 25304593 - 1
has 7617442 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-L57E482559D9F7281double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275302.392166.6667%29500067112500.80092.4718%303.193067.4906%0.8239%
PrimeNet2660.583662.1212%11000040000000.40004.9856%0.983764.0097%1.8885%
GPU722709.443064.2857%18000055000000.58383.7387%10.026865.6210%1.3353%
Difference+5+292.9491+2.3810%+115000+1211250+0.2171-1.2669%+293.1662+1.8696%+1.8696%

Known prime factors (1 factor, 84.0 bits, 0.00033196% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
25304593193739943020016665125038312684.002382815765936280155
3 × 5 × 8537 × 368881 × 8104141
2021-12-253688818104141191,5250.98201.0247

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-10-18T00:00:00ANONYMOUSv4_computers2950006711250---0.801--2.472%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-12-25T00:13:29Anton RepkoDeskMini200000012000000027P-12684.00211.61


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--
2004-10-18T00:00:00ANONYMOUSv4_computers21267--1.174--
2011-10-06T18:47:00garoManual testing267268--1.181--
2011-12-17T14:30:00bcp19Manual testing268269--2.362--
2017-03-20T02:00:03ramgeisManual testing269270--4.725--
2021-06-10T08:58:25mikrManual testing270271--9.450--
2021-08-28T20:02:05TheJudgerManual testing271272--18.90--
2021-08-28T20:02:05TheJudgerManual testing272273--37.80--
2021-10-01T19:43:38TheJudgerManual testing273274--75.60--
2021-10-17T20:35:05TheJudgerManual testing274275--151.2--


ECM factoring results:
No ECM results for M25304593


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-11-22T00:00:00ANONYMOUSv4_computers57E482559D9F728121.68
2012-09-06T06:09:00garotansen57E482559D9F728121.68


PRP results:
No PRP results for M25304593


P-1 factor-bounds graph:
B1 = 2000000, B2 = 120000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 295000, B2 = 6711250 (P-1 stage 2)
B1 = 295000 (P-1 stage 1)
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TF factor-bounds graph:
275
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2100
Last modified: 2021-12-25T00:13:29+00:00