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ALL the CTFS of Crypto2025 finally

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emln
2025-06-02 19:35:30 +02:00
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05/14/25 16:39:45,
05/14/25 16:39:45, ****************************
05/14/25 16:39:45, Starting factorization of 176278749487742942508568320862050211633
05/14/25 16:39:45, using pretesting plan: normal
05/14/25 16:39:45, no tune info: using qs/gnfs crossover of 95 digits
05/14/25 16:39:45, no tune info: using qs/snfs crossover of 95 digits
05/14/25 16:39:45, ****************************
05/14/25 16:39:45, rho: x^2 + 3, starting 1000 iterations on C39
05/14/25 16:39:45, rho: x^2 + 2, starting 1000 iterations on C39
05/14/25 16:39:45, rho: x^2 + 1, starting 1000 iterations on C39
05/14/25 16:39:45, final ECM pretested depth: 0.000000
05/14/25 16:39:45, scheduler: switching to sieve method
05/14/25 16:39:46, starting SIQS on c39: 176278749487742942508568320862050211633
05/14/25 16:39:46, random seed: 15381924001331922418
05/14/25 16:39:46, ==== sieve params ====
05/14/25 16:39:46, n = 39 digits, 128 bits
05/14/25 16:39:46, factor base: 576 primes (max prime = 9473)
05/14/25 16:39:46, single large prime cutoff: 473650 (50 * pmax)
05/14/25 16:39:46, using SSE41 enabled 32k sieve core
05/14/25 16:39:46, sieve interval: 1 blocks of size 32768
05/14/25 16:39:46, polynomial A has ~ 4 factors
05/14/25 16:39:46, using multiplier of 1
05/14/25 16:39:46, using multiplier of 1
05/14/25 16:39:46, using Q2(x) polynomials for kN mod 8 = 1
05/14/25 16:39:46, using SPV correction of 18 bits, starting at offset 29
05/14/25 16:39:46, trial factoring cutoff at 35 bits
05/14/25 16:39:46, ==== sieving started (1 thread) ====
05/14/25 16:39:46, trial division touched 85911 sieve locations out of 11665408
05/14/25 16:39:46, total reports = 85911, total surviving reports = 15765
05/14/25 16:39:46, total blocks sieved = 356, avg surviving reports per block = 44.28
05/14/25 16:39:46, 686 relations found: 307 full + 379 from 3054 partial, using 178 polys (22 A polys)
05/14/25 16:39:46, on average, sieving found 18.88 rels/poly and 107137.16 rels/sec
05/14/25 16:39:46, trial division touched 85911 sieve locations out of 11665408
05/14/25 16:39:46, ==== post processing stage (msieve-1.38) ====
05/14/25 16:39:46, QS elapsed time = 0.0317 seconds.
05/14/25 16:39:46, begin singleton removal with 3361 relations
05/14/25 16:39:46, reduce to 1021 relations in 2 passes
05/14/25 16:39:46, recovered 1021 relations
05/14/25 16:39:46, recovered 154 polynomials
05/14/25 16:39:46, attempting to build 686 cycles
05/14/25 16:39:46, found 686 cycles from 1021 relations in 1 passes
05/14/25 16:39:46, distribution of cycle lengths:
05/14/25 16:39:46, length 1 : 307
05/14/25 16:39:46, length 2 : 379
05/14/25 16:39:46, largest cycle: 2 relations
05/14/25 16:39:46, matrix is 576 x 686 (0.1 MB) with weight 11457 (16.70/col)
05/14/25 16:39:46, sparse part has weight 11457 (16.70/col)
05/14/25 16:39:46, filtering completed in 3 passes
05/14/25 16:39:46, matrix is 545 x 609 (0.1 MB) with weight 9852 (16.18/col)
05/14/25 16:39:46, sparse part has weight 9852 (16.18/col)
05/14/25 16:39:46, commencing Lanczos iteration
05/14/25 16:39:46, memory use: 0.1 MB
05/14/25 16:39:46, lanczos halted after 10 iterations (dim = 545)
05/14/25 16:39:46, recovered 64 nontrivial dependencies
05/14/25 16:39:46, prp20 = 14364722473065221639
05/14/25 16:39:46, prp20 = 12271643243945501447
05/14/25 16:39:46, Lanczos elapsed time = 0.0130 seconds.
05/14/25 16:39:46, Sqrt elapsed time = 0.0000 seconds.
05/14/25 16:39:46, SIQS elapsed time = 0.0455 seconds.
05/14/25 16:39:46,
05/14/25 16:39:46,
05/14/25 16:39:46, Total factoring time = 0.7035 seconds