is 272657631-1
has 21,872,127 decimal digits
takes 194.258 GHz-days to do one L-L test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275105.314664.0000%980,000980,0003.79921.8179%109.113865.8179%4.3893%
PrimeNet2703.288761.4286%320,00014,000,0004.13005.5361%7.418766.9647%5.5361%
GPU7227452.656163.5135%500,00017,000,0005.42344.1221%58.079567.6357%4.1221%
Difference+1+52.6585+0.4865%+480,000-16,020,000-1.6242-2.3042%+51.0343-1.8178%-1.8178%

Known prime factors (1 factor, 125.7 bits, 0.00017300% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
726576316914828122340056991938811122520569869738125.701475850094970757923000463029308
22 × 32 × 71 × 349 × 523 × 881 × 1187 × 11867 × 207721 × 395671
207,721395,6712015-08-202.430e+90.84501.6389

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-08-20T04:07:00Jerry HallettP1Main980,000980,00038125.7013.799388.57.5981.818%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2002-05-25T00:00:00Jocelyn Larouchev4_computers?257--0.000--
2008-09-19T11:27:00Wojciech FlorekManual testing?264--0.027--
2010-07-30T00:05:00vats09P4HTXP264265--0.051--
2010-10-03T12:43:00MarzbugCorei7265266--0.103--
2010-10-08T02:57:00MarzbugCorei7266267--0.206--
2010-10-11T00:37:00MarzbugCorei7267268--0.411--
2010-10-17T08:06:00MarzbugCorei7268269--0.823--
2012-10-01T03:15:00AntonioKManual testing269272--11.52--
2015-08-14T15:50:00NickOfTimeManual testing272273--13.16--
2015-08-14T15:50:00NickOfTimeManual testing273274--26.33--
2015-08-14T15:50:00NickOfTimeManual testing274275--52.66--


ECM factoring results:
Exponent "72657631" not found


Lucas-Lehmer results:
Exponent "72657631" not found


PRP results:
Exponent "72657631" not found


P-1 factor-bounds graph:
B1 = 980,000 (stage 1)
104
105
106
104
105
106
TF factor-bounds graph:
275
274
273
272
269
268
267
266
265
264
257
250
260
270
280
290
2100
2110
2120
2130
Last modified: 2015-08-20T04:07:00+00:00