1,501
1,501 is a composite number, odd, a calendar year.
1,501 (one thousand five hundred one) is an odd 4-digit number. It is a composite number with 4 divisors, and factors as 19 × 79. Written other ways, in Roman numerals it is MDI and in binary, 10111011101.
Interestingness
Notable events — 1501 AD
- Aug 14 The Italian Wars resume as France invades Naples.
- Sep 22 Pope Alexander VI issues a bull regulating book censorship.
- Undated Michelangelo begins work on the David.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
Year facts
- Year type
-
Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
- Days in year
- 365
- ISO weeks
- 52
- Started on
-
Tuesday
January 1, 1501
- Ended on
-
Tuesday
December 31, 1501
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
1500s
1500–1509
- Century
-
16th century
1501–1600
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
525
525 years before 2026.
In other calendars
- Hebrew
-
5261 / 5262 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
906 / 907 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Metal zodiac:Rooster
Sexagenary cycle position 58 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2044 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
879 / 880 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1493 / 1494 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1423 / 1422 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 19 × 79
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,501 = [38; (1, 2, 1, 7, 1, 6, 6, 3, 4, 1, 5, 1, 1, 1, 4, 1, 1, 14, 1, 18, 2, 3, 2, 1, …)]
Period length 60 — the block in parentheses repeats forever.
Representations
- In words
- one thousand five hundred one
- Ordinal
- 1501st
- Roman numeral
- MDI
- Binary
- 10111011101
- Octal
- 2735
- Hexadecimal
- 0x5DD
- Base64
- Bd0=
- One's complement
- 64,034 (16-bit)
- Scientific notation
- 1.501 × 10³
- As a duration
- 1,501 s = 25 minutes, 1 second
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓏺
- Greek (Milesian)
- ͵αφαʹ
- Mayan (base 20)
- 𝋣·𝋯·𝋡
- Chinese
- 一千五百零一
- Chinese (financial)
- 壹仟伍佰零壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,501 = 5
- e — Euler's number (e)
- Digit 1,501 = 8
- φ — Golden ratio (φ)
- Digit 1,501 = 1
- √2 — Pythagoras's (√2)
- Digit 1,501 = 9
- ln 2 — Natural log of 2
- Digit 1,501 = 5
- γ — Euler-Mascheroni (γ)
- Digit 1,501 = 8
Also seen as
UTF-8 encoding: D7 9D (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.221.
- Address
- 0.0.5.221
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.5.221
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 1,501 Hz is closest to:
- Concert pitch (A4 = 440 Hz): F♯6 (1480 Hz, +24¢)
- Scientific pitch (C4 = 256 Hz): G6 (1534.3 Hz, -38¢)
- Baroque pitch (A4 = 415 Hz): G6 (1478.9 Hz, +26¢)
The digit sequence 1501 first appears in π at position 1,342 of the decimal expansion (the 1,342ordinal-suffix:nd digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.