Most readers know 666 as the "number of the beast" from Revelation 13:18, but textual scholarship has established that at least one very old surviving manuscript records a different number entirely: 616. This isn't a fringe theory — it's a documented variant reading found in real ancient texts, and it's genuinely uncertain, even among specialists, which number the original text actually contained.
The Manuscript Evidence
The strongest evidence for 616 comes from Papyrus 115 (P115), a fragment of the Book of Revelation dated to roughly the 3rd century CE, discovered among the Oxyrhynchus papyri in Egypt and among the oldest surviving manuscript witnesses to this specific passage. It reads 616, not 666. The variant also appears in Codex Ephraemi Rescriptus, a 5th-century manuscript, and — notably — the early Christian bishop Irenaeus of Lyon, writing around 180 CE, explicitly mentioned that some copies of Revelation available in his own time read 616 rather than 666, though he personally argued 666 was the correct, original number and attributed the 616 variant to a copying error.
Gematria and "Nero Caesar"
Because Revelation was originally written in Greek but is widely believed to encode a numerical value through gematria — a system in which letters double as numbers, so a name or phrase can be converted into a specific numeric total — much of the scholarly interest in both 666 and 616 centers on what name or title might produce each value. The leading scholarly explanation for both numbers converges on the same identification: "Nero Caesar" transliterated into Hebrew and summed via gematria produces 666 in one common transliteration and 616 in a slightly different one (specifically, the Latin spelling "Nero Caesar" without the final Hebrew letter nun, which a Hebrew transliteration would otherwise include, changes the total from 666 to 616). Under this reading, both numbers may represent the same real historical target — the Roman emperor Nero, notorious in early Christian communities for persecuting Christians — with the discrepancy reflecting different transliteration conventions rather than two genuinely different intended meanings.
It's worth being honest about the limits of certainty here: this is a live area of textual and historical scholarship, not a settled fact with a single accepted answer, and different scholars weigh the manuscript evidence, the gematria argument, and Irenaeus's own testimony differently. What's solidly documented is that the 616 variant genuinely exists in ancient manuscripts, that it was known and discussed by Christian writers within roughly a century of Revelation's composition, and that both numbers have plausible gematria explanations tied to the same historical figure.
As a plain number, 616 factors as 2³ × 7 × 11 — a composite number with sixteen divisors — and has no independent mathematical fame outside this specific textual-historical footnote. Its notability rests entirely on manuscript evidence and gematria scholarship rather than any property of the number itself, a useful contrast with numbers on this site whose fame rests on a provable mathematical property rather than a documented historical or textual variant.
Why a Single-Digit Variant Matters to Scholars
It's genuinely worth pausing on why a single-digit manuscript variant like 666-versus-616 matters so much to textual scholars, beyond the specific number involved: ancient texts were copied by hand for centuries before printing, and a single miscopied letter in a Greek numeral (which, unlike Arabic numerals, used ordinary alphabet letters to represent numeric values) could shift an intended value in exactly this kind of small, plausible way. The 616/666 variant is one of the better-documented examples of this broader phenomenon in New Testament textual criticism, precisely because multiple independent early manuscripts preserve the alternate reading rather than it appearing as an isolated, likely-erroneous outlier.
Modern critical editions of the Greek New Testament, which compile and compare readings across the full surviving body of ancient manuscripts, generally footnote 616 explicitly as a documented alternate reading at Revelation 13:18, even while printing 666 as the primary text — a standard editorial practice for genuinely contested passages, letting readers see both the adopted reading and the documented manuscript variation rather than silently picking one without acknowledging the other existed in antiquity. This kind of transparent footnoting is standard practice across serious critical editions of ancient texts generally, not a special accommodation made only for this one especially famous variant, and it reflects a broader scholarly commitment to preserving genuine textual uncertainty rather than papering over it for the sake of a tidier, more confident-sounding final text.