The name Nahum in Hebrew letters is נחום. Below: how its number adds up, which page of the Torah it falls on and what verse stands there. Everything is computed, nothing is guessed.
נחום
In short
Your name in Hebrew letters is נחום. A Tanakh name: an Israelite prophet (first in Nahum 1:1; 1 mention in the Tanakh). Meaning, per Strong’s dictionary (1890): “comfort”. Adding up the numbers of its letters gives 104 — the same as the Torah word חוץ, “outside”. That number points to Torah page 104 of 354 — in the portion Vaera. What that portion is about: “And I appeared”: the promise of redemption in four expressions; the first seven plagues, from blood to hail. The verse that begins with the first letter of your name and ends with the last is Exodus 15:10. Each of these steps is laid out below with its sources. Every figure can be checked by hand.
You wrote “Nahum” — this exact spelling is what was calculated: נחום. A name from the Tanakh — its Tanakh spelling is used. If your name is spelled differently, correct the Hebrew spelling and the report is recomputed.
Adding up the letters of the name נחום gives 104.
104
The number 104 is the Torah word חוץ — «outside» (Genesis 6:14).
And the magicians did so with their secret arts to bring forth gnats, but they could not; and there were gnats upon man, and upon beast.
This is from the portion Vaera. What it is about: “And I appeared”: the promise of redemption in four expressions; the first seven plagues, from blood to hail.
Other ways of counting
The tradition counts the same name in several ways. The main one is above: each letter is its number. The other eight are old and checkable too; each gives its own number, and many of them have a Torah word with the same number.
Final letters as 500–900 (mispar gadol) — 664. A Torah word with the same number is במרכבת — “in the chariot of” (Genesis 41:43).
Reduced, each letter to one digit (mispar katan) — 23.
Ordinal: alef 1, bet 2 … tav 22 (mispar siduri) — 41. A Torah word with the same number is אם — “if” (Genesis 4:7).
Cumulative: a letter plus all letters before it (mispar kidmi) — 397. A Torah word with the same number is יהושוע — “Joshua, son of Nun” (Exodus 17:9).
Squares of the letter values (mispar perati) — 4200.
Building: the sum grows with each letter (mispar bone’eh) — 276. A Torah word with the same number is עור — “skin” (Genesis 3:21).
The letters that come out are טספי — not a word that stands in the Pentateuch. Atbash: letters mirrored, alef for tav, bet for shin, and the number of the resulting word — 159. A Torah word with the same number is קטן — “small” (Genesis 1:16).
Filling: the names of the letters are counted — alef, bet, gimel… (milui) — 616. A Torah word with the same number is יתרו — “Jethro, father-in-law of Moses” (Exodus 3:1).
The number 104 appears in the classical books 5 times across 5 works. The earliest mention is מנורת המאור (אלנקאווה) (~1400).
Every letter of the name explained, the words and namesakes with references, the Hebrew date, the letter and tribe of the month, day 861 of your life (±1), the psalm by age, the attestations from the classical books — a PDF sent to your email.
The number of the day, every morning
Every date has a number too. Once a year it will match the number of your name — 104. The channel posts one number a day, one verse and the Torah page it lands on. Nothing after it, no mailing list.
Hebrew is written from right to left. נחום has 4 letters: נ Nun, ח Chet, ו Vav, ם final Mem. The first letter is Nun, the last is final Mem.
For an engraving, a sign or a tattoo, show the spelling to someone who reads Hebrew: transliterating a name is a choice, not the only option.
The name נחום does not stand as a word in the Pentateuch — as with most names, including many Tanakh names from the later books.
The verse of your name
There is a custom: at the end of the prayer one says a Torah verse that begins with the first letter of one's name and ends with its last. For נחום these are נ and מ. The Pentateuch has 8 such verses. The first of them is Exodus 15:10:
נשפת ברוחך כסמו ים צללו כעופרת במים אדירים
This is from the portion Beshalach. What it is about: The parting of the sea and the song of Moses and Miriam; manna and quail; water from the rock; the war with Amalek.
The name נחום has no such day. The numbers of the dates in a year cover 326 values out of 940, and 104 is not among them. Half of all names are like this — neither good nor bad, just a fact of counting.
Add a date of birth and the verse of meeting from that week's portion is added to the reading.
Each Hebrew letter has a number; a word's number is their sum (alef 1 … tav 400). The page is the remainder modulo 354: the Torah divided into 354 pages of 861 letters, as the lunar year has 354 days. Everything can be checked by hand.