is 2 58273277 - 1
has 17542005 decimal digits
takes 123.507 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27332.825464.3836%----32.825464.3836%
Target27332.825464.3836%40000010400000018.57574.0797%51.401165.8366%
Difference----400000-104000000-18.5757-4.0797%-18.5757-1.4531%

Known prime factors (1 factor, 64.4 bits, 0.00011059% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
58273277250599915315541927132064.442215021299828
22 × 149 × 1223 × 294991		2012-11-0512232949910.11810.05290.0923

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-11-05abcC30D35CA52064.442-247.0-0.000%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-23ANONYMOUSv4_computers21253--2.05913e-5--
2000-02-09ANONYMOUSv4_computers21254--4.11826e-5--
2000-06-28ANONYMOUSv4_computers21256--0.000--
2000-06-29ANONYMOUSv4_computers21256--0.000--
2001-07-17ANONYMOUSv4_computers21257--0.000--
2002-09-22ANONYMOUSv4_computers21258--0.001--
2003-07-30ANONYMOUSv4_computers21259--0.001--
2003-12-13ANONYMOUSv4_computers21261--0.005--
2022-06-27LordJuliusManual testing261263--0.022--
2008-10-29Henning GerhardtCEEDE56AF263264--0.034--
2008-10-29KYOJI_KAMEIwlaptop264265--0.064--
2008-10-29KYOJI_KAMEIwlaptop265266--0.128--
2008-10-29KYOJI_KAMEIwlaptop266267--0.256--
2009-08-03S36049Wolle5267268--0.513--
2011-08-26Carsten KossendeyManual testing268269--1.026--
2011-10-04Erik1503269270--2.052--
2011-11-09OS1L1270271--4.104--
2012-06-03Craig MeyersManual testing271272--8.207--
2012-09-30Kyle AskineManual testing272273--16.41--


ECM factoring results:
No ECM results for M58273277


Lucas-Lehmer results:
No L-L results for M58273277


PRP results:
No PRP results for M58273277


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
264
263
261
259
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67.8
250
260
270
280
Last modified: 2023-06-05T21:50:05+00:00