is 2 91936463 - 1
has 27675634 decimal digits
takes 333.014 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
Actual277332.927464.9351%7000007000003.67661.2951%336.603965.3892%
Target27583.230464.0000%600000220000009.27514.1408%92.505565.4907%
Difference+2+249.6970+0.9351%+100000-21300000-5.5985-2.8456%+244.0985-0.1015%

Known prime factors (1 factor, 79.3 bits, 0.00008628% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
919364637569006708805010560095192479.3244116433492119993
3 × 11 × 43 × 211 × 223 × 5741 × 10739		2019-06-235741107391,721.70.03160.0614

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2019-06-23Jwb52zClay7000007000002479.3243.677666.07.3531.295%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-01-08Architects Cubedm1_82264265--0.041--
2013-06-29David CampeauManual testing265266--0.081--
2014-05-02ANONYMOUSManual testing266267--0.163--
2014-05-15ANONYMOUSManual testing267268--0.325--
2014-05-21ANONYMOUSManual testing268269--0.650--
2014-06-14jjnguyLittle_Guy269270--1.301--
2014-09-12SMoffatManual testing270271--2.601--
2018-04-09ixfd64Manual testing271273--15.61--
2018-09-27gcardonaManual testing273274--20.81--
2019-01-24Strolling JellyfishManual testing274275--41.62--
2019-01-24Strolling JellyfishManual testing275276--83.23--
2019-04-12Jon PaceManual testing276277--166.5--


ECM factoring results:
No ECM results for M91936463


Lucas-Lehmer results:
No L-L results for M91936463


PRP results:
No PRP results for M91936463


P-1 factor-bounds graph:
B1 = 700000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
TF factor-bounds graph:
277
276
275
274
273
271
270
269
268
267
266
265
this exponent TF target: 75
TF double-checked to: 67.8
250
260
270
280
Last modified: 2023-04-26T21:34:10+00:00