is 2 89267203 - 1
has 26872106 decimal digits
takes 300.946 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276171.440364.4737%715000132275006.82773.4663%178.268065.7051%1.2314%
PrimeNet2715.355661.9718%360000170000006.19165.4130%11.547264.0303%2.0585%
GPU7227585.719164.0000%600000200000008.09994.0531%93.819065.4591%1.4591%
Difference+1+85.7211+0.4737%+115000-6772500-1.2722-0.5868%+84.4489+0.2460%+0.2460%

Known prime factors (1 factor, 84.8 bits, 0.00009502% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
89267203341653738816175060220600012684.821191365768913010000
24 × 3 × 54 × 29 × 40193 × 5472611
2018-10-2340193547261149,0191.64332.7223

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-10-23T19:56:18Jwb52zClay715000132275002684.8216.828601.913.663.466%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-11-08T20:20:00Architects Cubeda3_bu2264265--0.042--
2013-03-17T00:00:00GrunwalderGIMPcompute-0-5265266--0.084--
2013-03-17T20:47:00GrunwalderGIMPcompute-0-5266267--0.167--
2013-03-18T17:47:00Florimond C.ichthys1267268--0.335--
2013-07-24T23:21:00SMoffatManual testing268269--0.670--
2013-07-27T20:37:00SMoffatManual testing269270--1.339--
2013-09-22T01:26:00SMoffatManual testing270271--2.679--
2017-07-10T15:30:08monstManual testing271272--5.358--
2017-08-29T04:07:46lemonlurkerManual testing272273--10.72--
2017-09-01T15:42:31gcardonaManual testing273274--21.43--
2018-10-11T17:20:231997rj7Manual testing274275--42.86--
2018-10-14T16:10:05Strolling JellyfishManual testing275276--85.72--


ECM factoring results:
No ECM results for M89267203


Lucas-Lehmer results:
No L-L results for M89267203


PRP results:
No PRP results for M89267203


P-1 factor-bounds graph:
B1 = 715000, B2 = 13227500 (P-1 stage 2)
B1 = 715000 (P-1 stage 1)
103
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108
TF factor-bounds graph:
276
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2100
Last modified: 2018-10-23T19:56:18+00:00