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Composite Details

ID: 987 | 257 digits

15208716521132106984187186171383235967196301075931471295992339262887803830442363558824971150888651833440030346820555419917997745558189791603451259429916679800491815964347726552835207295657217806607270217770602969763144278282771307827204164004481659414503329

Composite Information

ID987
Original Form(360695060812151513696599168442634012909792433492177^7-1)/(360695060812151513696599168442634012909792433492177-1)
Current Composite 1520871652113210698418718617138323596719630107593147129599233926288780383044236355882497115088865183...
Digit Length257
SNFS Possible Yes
GNFS Equivalent 207
Priority3
Created2025-10-01 12:55:31.684300
Last Updated2026-01-12 18:14:28.668556
Status Active

T-Level Progress

Current T-Levelt36.54
Target T-Levelt63.69
Progress
57.4%

Work Summary

Total Attempts1
Total ECM Curves3,072
P-1 Attempts0
Factors Found1

Factors: 748444615672982809467957210735643541765357

Factors with Elliptic Curve Group Order Data

Factor Sigma Group Order Group Order Factorization
748444615672982809467957210735643541765357 4,175,083,452 748444615672982809467802448618662685192116 2^2 * 14057 * 23333 * 25747 * 65371 * 175811 * 643021 * 1622549 * 1847803

Factorization Attempts by Method

ECM 3,072 curves
P-1 0 attempts
P+1 0 attempts
ECM Statistics:
Total Attempts: 1
Total Curves: 3,072
Factors Found: 1
B1 Range: 11,000,000 - 11,000,000
B1 B2 Param Curves Factor Found Client Submitted
11,000,000 Stage 1 only 3 3,072 748444615672982809467957210735643541765357 KyleAskine-PC_V2 2025-10-27 19:56
P-1 Statistics:
Total Attempts: 0
Factors Found: 0

No P-1 attempts yet.

P+1 Statistics:
Total Attempts: 0
Factors Found: 0

No P+1 attempts yet.