1517
1517 is the year Martin Luther published his Ninety-five Theses.
- Odd
- Composite
Where 1517 fits
Why 1517 is special
The theses objected to the sale of indulgences and were written in Latin for scholarly debate rather than mass circulation. Printing turned them into something else within months. The often-repeated image of Luther nailing them to the Wittenberg church door is recorded only after his death and remains disputed.
Same number, different meanings
How 1517 is understood across different contexts — never implying one meaning because of another.
- Mathematics
The theses objected to the sale of indulgences and were written in Latin for scholarly debate rather than mass circulation. Printing turned them into something else within months. The often-repeated image of Luther nailing them to the Wittenberg church door is recorded only after his death and remains disputed.
- History
In 1517, Luther circulated ninety-five theses against indulgences, and the Reformation is dated from them (Central Europe).
- Religion & belief
Luther's Ninety-five Theses objected to the sale of indulgences and were written in Latin for academic debate, not mass circulation — printing turned them into something their author had not planned. The scene of them being nailed to the Wittenberg door is recorded only after Luther's death and is disputed by historians.
1517 is part of
Factors & digit properties
- Divisors (4)
- 1, 37, 41, 1517
- Prime factorisation
- 37 × 41
- Digit sum
- 14
- Digital root
- 5
Representations
- Decimal
- 1517
- Scientific notation
- 1.517 × 10^3
Roman numerals
M D X V I I
Binary
1 0 1 1 1 1 0 1 1 0 1
1 × 1,024 + 0 × 512 + 1 × 256 + 1 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 1 × 8 + 1 × 4 + 0 × 2 + 1 × 1 = 1,517
Octal
2 7 5 5
2 × 512 + 7 × 64 + 5 × 8 + 5 × 1 = 1,517
Hexadecimal
5 e d
5 × 256 + e × 16 + d × 1 = 1,517
Read as powers of two: 1,024 + 256 + 128 + 64 + 32 + 8 + 4 + 1 = 1,517.
In historical numeral systems
Egyptian
1 lotus, 5 coils of rope, 1 hobble, 7 strokes
1 × 1,000 + 5 × 100 + 1 × 10 + 7 × 1 = 1,517. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 5 vertical wedges (sixties place), 1 corner wedge + 7 vertical wedges (units place)
25 × 60 + 17 = 1517. Places are separated by a space on the tablet, with the higher place written first.
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
- Semiprime
Related numbers & connections
1517 is a year in the 16th century, in the 1510s.
Erasmus attacked clerical abuses from inside the church in 1511 and opposed Luther's rupture six years later. Reform and schism were distinct positions held by people who agreed about the problem.
View 1511 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
History
In 1517, Luther circulated ninety-five theses against indulgences, and the Reformation is dated from them (Central Europe).
DocumentedHistoryGeography: Central EuropePeriod: 1517
Religion & belief
Luther's Ninety-five Theses objected to the sale of indulgences and were written in Latin for academic debate, not mass circulation — printing turned them into something their author had not planned. The scene of them being nailed to the Wittenberg door is recorded only after Luther's death and is disputed by historians.
DocumentedReligion & beliefGeography: Wittenberg, Holy Roman EmpirePeriod: 1517
Common questions
Is 1517 a prime number?
No, 1517 is not prime.
What are the factors of 1517?
The factors of 1517 are 1, 37, 41, 1517.
What is 1517 in Roman numerals?
1517 in Roman numerals is MDXVII.
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