is 2 12756313 - 1
has 3840033 decimal digits
takes 5.211 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-
PRPD066A01C6F8BADC8PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2672.329364.1791%40000042845985014.05019.9922%16.379567.7584%3.5793%
PrimeNet2640.279062.5000%5500017000000.08574.2626%0.364764.0985%1.5985%
GPU722684.672664.7059%9000024000000.12783.1600%4.800465.8212%1.1153%
Difference-1-2.3432-0.5268%+310000+426059850+13.9223+6.8322%+11.5790+1.9372%+2.4640%

Known prime factors (2 factors, 166.7 bits, 0.00130716% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
12756313617405549211135.8452420
22 × 5 × 112
-1211215.468e-107.167e-50.0001
12756313254062233950967455170720079780499844960940130.90099582941383990599466601391711108
22 × 3 × 72 × 19 × 31 × 43 × 421 × 467 × 4517 × 16369 × 68489 × 6716327
2022-05-076848967163271.162e+100.25510.4048

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1275631315685943308601656987051448516805452302640431547588
9
51166.746
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-05-07T01:42:41nordisweet16_30.8b14400000400000-
skipped known factor: 61740554921
--0.237--2.427%
2022-05-07T08:31:41nordisweet16_30.8b1440000042845985040130.90014.0510.4228.109.992%


Trial Factoring results:
No TF results for M12756313


ECM factoring results:
No ECM results for M12756313


Lucas-Lehmer results:
No L-L results for M12756313


PRP results:
dateuseridcompidcofactorsres64PRP
2022-05-07T20:02:31XZT600G2Mini2
61740554921
D066A01C6F8BADC8no


P-1 factor-bounds graph:
B1 = 400000, B2 = 428459850 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100
2110
2120
2130
2140
Last modified: 2022-05-07T20:02:31+00:00