#see!

The number 57,885,161 goes in and is split up into a distributed hash, which is then transmitted on to twenty different special-purpose computers all over the planet, sending partially hashed inputs to each other that can be locally verified given other remote inputs. The verifications check out. No one in Civilization should have known this mathematical fact, or been able to learn it. Something knows it anyways. Six thousand key people are paged, woken up out of bed, or have VTOL aircraft dispatched to grab them. Emergency-alert melodies play in a tiny remote causally-sealed passive-observation bunker containing some people who actually learned history, in case this is a situation where remembering the past would help enough that the seal on it ought to be broken. All the anomaly filters are disabled on all of the software; the last 24 hours of stored data start to undergo re-review without those filters; and everything anomalous is queued for review by millions of idle or interruptible dath ilani mechanical-turkers who have just this second been paged with override project-requests.  Civilization turns a massive and unsustainable level of attention on inspecting itself for anomalies, starting with military installations, key infrastructure, and anything to do with children. A massive three-stage fission-fusion nuclear weapon on top of a space-capable missile is armed and released to Governance control, along with a sequence of smaller fusion weapons, in case anything on or near the planet needs to be vaporized. An additional cryptographically hashed message is recovered.  This one combines with a code in possession of the current head Keeper.  It permits her to broadcast a radio signal that, if its one-way hash matches a stored result built into secret hardwired circuits, will destroy every Networked computer in dath ilan on ten seconds' notice. Green lights flash in the streets of a massive secret city housing all the Artificial Intelligence researchers.  Dath ilan has not built an emergency best-guess-alignment Artificial General Intelligence to keep in reserve; they have Earth-orbit asteroid monitoring, they are carefully monitoring the Yellowstone caldera.  The chance that an Artificial General Intelligence will be wrongly set off, if built, has been evaluated by secret prediction markets to be greater than the chance that such a tool will be suddenly needed on short notice.  This prediction has now been revealed as horrifically wrong.  The green lights are telling everyone to drop everything and take their best current plans and move forward now, trying to get dath ilan as quickly as possible to the point where in an emergency it can turn up a dial on the intelligence level of hopefully-aligned AGI; though of course they are not supposed to actually turn up that dial, unless everybody is about to immediately die otherwise. Emergency testing of the purported 49th Mersenne prime is now in progress.