601
The Abraj Al Bait clock tower is about 601 metres tall.
- Odd
- Prime
Where 601 fits
Why 601 is special
Its clock face is the largest in the world by a wide margin, and the complex was built next to the Grand Mosque in Mecca on the site of an Ottoman fortress.
601 is part of
Factors & digit properties
- Divisors (2)
- 1, 601
- Prime factorisation
- 601
- Digit sum
- 7
- Digital root
- 7
Representations
- Decimal
- 601
- Scientific notation
- 6.010 × 10^2
Roman numerals
D C I
Binary
1 0 0 1 0 1 1 0 0 1
1 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 0 × 32 + 1 × 16 + 1 × 8 + 0 × 4 + 0 × 2 + 1 × 1 = 601
Octal
1 1 3 1
1 × 512 + 1 × 64 + 3 × 8 + 1 × 1 = 601
Hexadecimal
2 5 9
2 × 256 + 5 × 16 + 9 × 1 = 601
Read as powers of two: 512 + 64 + 16 + 8 + 1 = 601.
In historical numeral systems
Egyptian
6 coils of rope, 1 stroke
6 × 100 + 1 × 1 = 601. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge (sixties place), 1 vertical wedge (units place)
10 × 60 + 1 = 601. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
chi, then alpha, marked as a numeral
chi-alpha + keraia
chi + alpha written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
tav, then resh, then alef
tav-resh-alef
tav (400) + resh (200) + alef (1) = 601, written in descending order.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Deficient number
- Lucky number (mathematical sieve)
- Twin prime
Related numbers & connections
Both are extreme-height structures built in the Gulf within a decade of each other.
View 828 →Other connections
- is associated with828
why?
Strength 0.50, confidence "high".
Technology & computing
The Abraj Al Bait Towers in Mecca reach roughly 601 metres. The clock faces are approximately 43 metres across, several times the diameter of previously record-holding clocks.
DocumentedTechnology & computingGeography: Saudi ArabiaPeriod: 2012CWE-601 is a URL redirection to an untrusted site. It is frequently dismissed as low severity and is routinely the step that makes a phishing link appear to originate from a trusted domain.
DocumentedTechnology & computingGeography: International — MITRE CWEPeriod: 2006–
Common questions
Is 601 a prime number?
Yes, 601 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 601?
The factors of 601 are 1, 601.
What is 601 in Roman numerals?
601 in Roman numerals is DCI.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026