is 2 697855621 - 1
has 210075475 decimal digits
takes 22,623.768 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
Actual2680.085455.8824%----0.085455.8824%0.0000%
PrimeNet280350.884362.5000%2600000180000000576.55865.6318%927.442964.6119%2.1119%
GPU722845,614.152164.2857%4000000180000000638.78364.2187%6,252.935765.7924%1.5067%
Difference-16-5,614.0667-8.4034%-4000000-180000000-638.7836-4.2187%-6,252.8503-9.9100%-9.9100%

Known prime factors (1 factor, 65.4 bits, 0.00000938% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
697855621495073273171045613292065.42435471038584
23 × 3 × 1477959941
2013-11-24814779599410.02093,785.27,069.7

P-1 results:
No P-1 results for M697855621


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-01-04T00:00:00lindedv4_computers261262--0.000--
2010-06-25T07:50:00Architects Cubedm1_18263264--0.003--
2012-01-25T11:31:00laleraManual testing264265--0.005--
2013-11-24T10:36:00sasakiManual testing26526665.424200.01046,3620.021
2022-08-10T19:30:10LordJuliusManual testing2126865.424200.02146,3620.043


ECM factoring results:
No ECM results for M697855621


Lucas-Lehmer results:
No L-L results for M697855621


PRP results:
No PRP results for M697855621


P-1 factor-bounds graph:
100
101
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
268
266
265
264
262
250
260
270
280
290
2100
Last modified: 2022-08-10T19:30:10+00:00