1,301
1,301 is a prime, odd, a calendar year.
1,301 (one thousand three hundred one) is an odd 4-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in Roman numerals it is MCCCI and in binary, 10100010101.
Interestingness
Historical context — 1301 AD
Calendar year
Year 1301 (MCCCI) was a common year starting on Sunday of the Julian calendar.
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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
-
Saturday
January 1, 1301
- Ended on
-
Saturday
December 31, 1301
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
1300s
1300–1309
- Century
-
14th century
1301–1400
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
725
725 years before 2026.
In other calendars
- Hebrew
-
5061 / 5062 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
700 / 701 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Metal zodiac:Ox
Sexagenary cycle position 38 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1844 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
679 / 680 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1293 / 1294 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1223 / 1222 Saka
Indian national calendar; year starts in March.
Properties
Primality
1,301 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,301 = [36; (14, 2, 2, 2, 2, 14, 72)]
Period length 7 — the block in parentheses repeats forever.
Representations
- In words
- one thousand three hundred one
- Ordinal
- 1301st
- Roman numeral
- MCCCI
- Binary
- 10100010101
- Octal
- 2425
- Hexadecimal
- 0x515
- Base64
- BRU=
- One's complement
- 64,234 (16-bit)
- Scientific notation
- 1.301 × 10³
- As a duration
- 1,301 s = 21 minutes, 41 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓏺
- Greek (Milesian)
- ͵αταʹ
- Mayan (base 20)
- 𝋣·𝋥·𝋡
- Chinese
- 一千三百零一
- Chinese (financial)
- 壹仟參佰零壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,301 = 2
- e — Euler's number (e)
- Digit 1,301 = 3
- φ — Golden ratio (φ)
- Digit 1,301 = 0
- √2 — Pythagoras's (√2)
- Digit 1,301 = 5
- ln 2 — Natural log of 2
- Digit 1,301 = 0
- γ — Euler-Mascheroni (γ)
- Digit 1,301 = 7
Also seen as
UTF-8 encoding: D4 95 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.21.
- Address
- 0.0.5.21
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.5.21
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 1,301 Hz is closest to:
- Concert pitch (A4 = 440 Hz): E6 (1318.5 Hz, -23¢)
- Scientific pitch (C4 = 256 Hz): E6 (1290.2 Hz, +14¢)
- Baroque pitch (A4 = 415 Hz): F6 (1317.5 Hz, -22¢)
The digit sequence 1301 first appears in π at position 6,320 of the decimal expansion (the 6,320ordinal-suffix:th 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
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.