is 2 697888621 - 1
has 210085409 decimal digits
takes 22,624.838 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
Actual2732.740958.9041%----2.740958.9041%0.0000%
PrimeNet280350.867762.5000%2600000180000000576.55865.6319%927.426364.6120%2.1120%
GPU722845,613.886764.2857%4000000180000000638.78364.2187%6,252.670365.7924%1.5067%
Difference-11-5,611.1458-5.3816%-4000000-180000000-638.7836-4.2187%-6,249.9294-6.8883%-6.8883%

Known prime factors (1 factor, 64.3 bits, 0.00000921% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
697888621225373256200415733292064.28916146792584
23 × 13 × 155257621
2012-01-25131552576210.0091397.63742.66

P-1 results:
No P-1 results for M697888621


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2012-01-25T14:36:00ANONYMOUSManual testing??64.289200.00446,3640.008
2012-01-26T14:41:00laleraManual testing??64.289200.00446,3640.008
2010-03-17T00:00:00lindedv4_computers261262--0.000--
2010-06-25T07:50:00Architects Cubedm1_16263264--0.003--
2022-08-12T16:27:09LordJuliusManual testing2127064.289200.00946,3640.019
2022-08-12T16:27:09LordJuliusManual testing270271--0.343--
2022-08-12T16:27:09LordJuliusManual testing271272--0.685--
2022-08-12T16:27:09LordJuliusManual testing272273--1.371--


ECM factoring results:
No ECM results for M697888621


Lucas-Lehmer results:
No L-L results for M697888621


PRP results:
No PRP results for M697888621


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
273
272
271
270
264
262
2
250
260
270
280
290
2100
Last modified: 2022-08-12T16:27:09+00:00