Factor Info
| ID | 8517 |
| Size | 194 digits / 643 bits |
| Status | composite |
| Value | 30971421400960088018411808190145825880754358147329251754601032296525032762141107020983837227957712670182186908662260109698967957109434633702089467080814771813834444990407486733195950380009881553 |
Factorizations
| Primary | (ID: 18227) 124017815182557414772494313985201 (proven prime) |
| (ID: 18228) 249733647987342454470258501882482868070690166750397348153233219270936482809603161558791127500303061911648501387201625119863415619972403483224249378367096559985953 (composite) |
Primary factorization keeps track of the smallest (known) prime factor. Secondary factorizations are old results kept when a new smaller prime factor is found, which occasionally happens with ECM.