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Old 2022-04-25, 15:41   #52
chris2be8
 
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Sep 2009

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QUEUED AS f86_145m1

(86^145-1)/342566367793797626159014316352812442963809646440823536952804035860520605898880194075 from the Brent tables:
Code:
# Record 1 match 1 from parameters read Thu Mar 17 06:43:40 2022
# SNFS difficulty is 224., GNFS equivalent is 180, GNFS difficulty is 197, degree 4
# phi 145 86 1 92796310076150174650606277787066670853018917075743709389649136557988391353696288824916051652989175421518717181309643875668146609882845966643250182902383559070944159727337956058898734243473011583981
n: 92796310076150174650606277787066670853018917075743709389649136557988391353696288824916051652989175421518717181309643875668146609882845966643250182902383559070944159727337956058898734243473011583981
# 86^145-1^145, difficulty: 224.40, skewness: 1.00, alpha: 1.45
# cost: 1.10354e+18, est. time: 525.49 GHz days (not accurate yet!)
skew: 1.000
c4: 1
c3: 1
c2: 1
c1: 1
c0: 1
Y1: -1
Y0: 126024529890394348379345391831458407434589541727066914816
type: snfs
# msieve rating: skew 1.00, size 7.427e-23, alpha 1.694, combined = 1.259e-13 rroots = 0
rlim: 134000000
alim: 134000000
lpbr: 31
lpba: 31
mfbr: 62
mfba: 62
rlambda: 2.6
alambda: 2.6
Sieve from 84M to 175 M on the rational side (yield drops off at lower special-Q).

Test sieving 10k ranges:
Code:
  Q  yield
 34M 17183
 84M 23199
134M 25134
184M 23689
I looked at skewed LPBR/A, but 31/30 yields are too low and 32/31 too high.

Last fiddled with by swellman on 2022-04-25 at 18:30
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