is 2 75917953 - 1
has 22853582 decimal digits
takes 209.890 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
Actual27450.394763.5135%6700006700002.68591.7478%53.080664.1512%0.6377%
PrimeNet2703.147561.4286%320000140000004.27075.5656%7.418263.5753%2.1467%
GPU7227450.394763.5135%500000180000005.82664.1892%56.221365.0420%1.5285%
Difference---+170000-17330000-3.1407-2.4414%-3.1407-0.8908%-0.8908%

Known prime factors (1 factor, 98.9 bits, 0.00013026% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
759179535862448278385750421722187719933098.8873861042116339563595532
22 × 37 × 2579 × 2711 × 108289 × 582949
2015-04-251082895829491.144e+90.53780.8835

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-04-25T00:57:00guruw56700006700003098.8872.686419.85.3721.748%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2004-09-16T00:00:00Marzbugv4_computers21263--0.021--
2009-06-01T12:37:00Architects Cubedm1_36263264--0.026--
2010-08-15T02:53:00Anu JärviAnu264265--0.049--
2010-10-29T04:46:00Hollie L Buchanan IINetBook265266--0.098--
2010-11-11T18:12:00Hollie L Buchanan IINetBook266267--0.197--
2011-01-24T20:07:00dsls3267268--0.394--
2011-01-31T04:08:00john_sC4043C45E268269--0.787--
2011-03-05T21:18:00kohsuke_aconPrime01269270--1.575--
2013-06-01T15:11:00Six Blue Boxesseedbox270271--3.150--
2015-03-29T10:59:00LaurVManual testing271272--6.300--
2015-04-08T14:54:00The MawnManual testing272273--12.60--
2015-04-08T14:54:00The MawnManual testing273274--25.20--


ECM factoring results:
No ECM results for M75917953


Lucas-Lehmer results:
No L-L results for M75917953


PRP results:
No PRP results for M75917953


P-1 factor-bounds graph:
B1 = 670000 (P-1 stage 1)
104
105
106
104
105
106
TF factor-bounds graph:
274
273
272
271
270
269
268
267
266
265
264
263
250
260
270
280
290
2100
Last modified: 2015-04-25T00:57:00+00:00