de.wikipedia.org/wiki/Der_kleine_Prinz

The cited bibliographic line gives Gallimard, Paris 1943, but the French national library records a different publication history for Le petit prince: it states that the work was first published in New York in 1943, and then "en France chez Gallimard en avril 1946". That means a Gallimard Paris edition dated 1943 is incorrect.

So the problem is not the year of the work’s first publication overall, but specifically the claim that Éditions Gallimard in Paris published it in 1943. According to the BnF, Gallimard’s French edition came later, in April 1946.

The sentence is written in the present tense ("befindet sich"), but the Hakone museum has been closed for years. A 2023 notice reproduced on Konica Minolta Planetarium’s site quotes the museum’s own closure announcement and says it would close "2023年3月31日" (March 31, 2023).

Because the article says that there is a museum in Hakone, readers are told something that is no longer true. A historically accurate phrasing would need to say that the museum was located in Hakone and closed in 2023.

This sentence explicitly says "Bis heute" (to this day), so it makes a present-day quantitative claim. The official Petit Prince Collection website now states that The Little Prince exists in 683 different languages and dialects, and says this is the official number agreed to with the Succession Antoine de Saint Exupéry.

That directly contradicts the article’s current count of 618. While translation totals can change over time, a statement framed as "to this day" should reflect the current official total, and 618 no longer does.