is 2 25041217 - 1
has 7538158 decimal digits
takes 21.459 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
Actual2671.186662.6866%----1.186662.6866%0.0000%
PrimeNet2660.589862.1212%11000040000000.40004.9786%0.989864.0071%1.8858%
GPU722709.542364.2857%18000050000000.55003.6611%10.092365.5932%1.3075%
Difference-3-8.3557-1.5991%-180000-5000000-0.5500-3.6611%-8.9057-2.9067%-2.9067%

Known prime factors (3 factors, 158.8 bits, 0.00063421% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
250412172062895456471237.5864119
3 × 1373
-313731.383e-99.647e-50.0002
250412175723160693793055531858.99011427481128
23 × 3 × 7 × 157 × 433253
2015-10-161574332530.00270.02950.0548
2504121754430504453559347691962.239108681827352
23 × 3 × 7 × 646915639
2016-07-1486469156390.026743.79581.797

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
250412171180628219187338718327540777913096.575
2504121711228444033061767846919799005433199.825
25041217311514523631938715199713218038747225737121.229
2504121764262189542474281816297772613913409630734761527948158.815
P-1 results:
No P-1 results for M25041217


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-10-16T11:27:08TJAOIManual testing258259*58.990180.00144.300.002
2022-06-24T06:01:06LordJuliusManual testing2126237.586121.38305e-944.312.85568e-9
2022-06-24T06:01:06LordJuliusManual testing2126258.990180.00344.300.006
2016-07-14T14:17:02TJAOIManual testing262263*62.239190.00244.240.004


ECM factoring results:
No ECM results for M25041217


Lucas-Lehmer results:
No L-L results for M25041217


PRP results:
No PRP results for M25041217


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
263
262
259
230
240
250
260
270
280
290
2100
Last modified: 2022-06-24T06:01:06+00:00