FactorDB doesn't autofactor anything above 70 digits. Which means if FF is appearing in your browser, then that factorization was already in the DB.
I'm not sure a priori what could be causing this behavior. The aliquot sequence status page does a ton of FDB queries (obviously), and although we get errors from time to time, retrying a handful of times eventually rectifies the error.
Is this problem reproducible? If so, what numbers specifically?
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