Factor Info
| ID | 1913 |
| Size | 86 digits / 283 bits |
| Status | composite |
| Value | 10128922155300023215975093706429251199697632302568576111032164966556715145163825481801 |
Factorizations
| Primary | (ID: 387) 372961972274566497161 (proven prime) |
| (ID: 10020) 27158056070776381702850904822402606491932496104461803548064706241 (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.