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Composite Details

ID: 1564 | 118 digits

1256537489306377942207682314544462752109454275452927717232043284546898067287707459864740940583708844790574841959949211

Composite Information

ID1564
Original Form(3368729516337631^17-1)/(3368729516337631-1)
Current Composite 1256537489306377942207682314544462752109454275452927717232043284546898067287707459864740940583708844...
Digit Length118
SNFS Possible Yes
GNFS Equivalent 192
Priority3
Created2025-10-01 12:56:47.349878
Last Updated2026-03-03 16:09:57.294520
Status Active

T-Level Progress

Current T-Levelt44.38
Target T-Levelt36.31
Progress
122.2%

Work Summary

Total Attempts7
Total ECM Curves10,836
P-1 Attempts2
Factors Found2

Factors: 813446535457972200531470011437769276981319, 2176796518817924587541183290241938487247870599

Factor Group Order Data

Factor Method Group Order Factorization
2176796518817924587541183290241938487247870599 ECM (σ=3,486,630,230) 2176796518817924587541217810200174875315503000 2^3 * 3 * 5^3 * 7 * 11 * 17 * 131 * 281 * 523 * 727541 * 854993 * 1690831 * 5017699 * 5455729
813446535457972200531470011437769276981319 ECM (σ=3,427,336,545) 813446535457972200529778177947841594239820 2^2 * 5 * 23 * 59 * 127 * 373 * 46327 * 532601 * 4815583 * 7435531 * 716159243

Factorization Attempts by Method

ECM 10,836 curves
P-1 2 attempts
P+1 1 attempts
ECM Statistics:
Total Attempts: 4
Total Curves: 10,836
Factors Found: 2
B1 Range: 3,000,000 - 11,000,000
B1 B2 Param Curves Factor Found Client Submitted
11,000,000 2,862,945,550 3 95 813446535457972200531470011437769276981319 kruoli-och 2026-03-03 16:09
11,000,000 Stage 1 only SUPERSEDED 3 5,376 None kruoli-3090Ti-2 2026-03-03 14:36
11,000,000 2,861,203,810 3 5,376 None kruoli-och 2026-02-23 11:20
11,000,000 Stage 1 only SUPERSEDED 3 5,376 None kruoli-3090Ti-1 2026-02-22 17:59
3,000,000 Default 1 2,293 None kruoli-5950X 2026-02-13 08:46
11,000,000 Stage 1 only 3 3,072 2176796518817924587541183290241938487247870599 KyleAskine-PC_V2 2025-10-27 03:28
P-1 Statistics:
Total Attempts: 2
Total Curves: 2
Factors Found: 0
B1 Range: 110,000,000 - 2,900,000,000
B1 B2 Curves Factor Found Client Submitted
110,000,000 Default 1 None KyleAskine-PC_V2 2026-02-13 00:19
2,900,000,000 1,000,000,000,000,000 1 None KyleAskine-PC_V2 2025-11-16 20:37
P+1 Statistics:
Total Attempts: 1
Total Curves: 3
Factors Found: 0
B1 Range: 110,000,000 - 110,000,000
B1 B2 Curves Factor Found Client Submitted
110,000,000 Default 3 None KyleAskine-PC_V2 2026-02-13 00:19