Did Kaneki Really Say “What's 1000 Minus 7?”
Yes, but he learned it from Yamori. The count from 1,000 by sevens was his torturer's instruction first; Kaneki keeps it, asks it of himself and his opponents, and turns it on Yamori.
Spoilers throughout. This page assumes you have finished the series.
True, with a borrowed origin. Ken Kaneki does ask "What's 1,000 minus seven?" in Tokyo Ghoul. He did not invent it. The question belonged first to Yamori, the Aogiri Tree torturer called Jason, who made Kaneki count down from 1,000 by sevens while he tortured him. Kaneki kept the question afterward, which is why it now travels under his name.
The verdict
CBR's explainer prints the line in that wording and says plainly that "Kaneki was not the first person to speak this famous quote. The originator was Yakumo Oomori, nicknamed Jason." It also says that "at times, Kaneki would ask himself or the people he's fighting" the same question. So the attribution is right and the usual story about it is incomplete.
The scene
CBR puts the torture at ten days. Yamori's instruction to count down from 1,000 by seven was meant to keep Kaneki focused and stop him passing out from the pain, and it was repeated until it became a mantra. When Kaneki breaks free he reverses the roles: CBR says he "made Jason count down from 1,000 by seven while he slowly devoured him." A second CBR feature notes that the anime makes the torture a focus of both of the last two episodes of its first season, beginning in episode 11, where the manga gives it three short chapters.
Kaneki's own use has a placement too. Anime News Network's review of Tokyo Ghoul √A episode 5 records that when the investigator Shinohara asks how many kagune sacs he has, Kaneki responds "One thousand minus seven." The reviewer reads it as Kaneki not answering Shinohara at all: his mind is back in the torture chamber with Jason.
The same count reads differently in each mouth. From Yamori it is a way to keep a victim awake for more pain. From Kaneki, afterward, it is a habit taken from the man who broke him, along with the knuckle-cracking CBR also mentions. Quoting it as a Kaneki catchphrase skips the part where it was done to him.
How we checked
Wikiquote has no Tokyo Ghoul page, so the witnesses here are editorial, read on 2026-10-14: CBR's body text for the origin and for Kaneki's habit, and Anime News Network, a separate publisher, for the √A episode 5 scene. Screen Rant agrees that Kaneki adopts Yamori's mannerisms, but Screen Rant and CBR share an owner, so it is not a second, independent source. ANN's wording is Kaneki's answer rather than the question, and neither outlet names a dub or subtitle track. We did not read VIZ's English volumes, so we give no manga chapter. The series is in the Tokyo Ghoul buying guide; a Kaneki line that did not check out is here, and both verdicts are in the fact-check database, under the verification method.