1,611
1,611 is a composite number, odd, a calendar year.
Notable events — 1611 AD
- May 2 The King James Bible is published.
- Jun 23 Mutinous crew set Henry Hudson adrift in Hudson Bay.
- Oct 13 Pope Paul V approves the Carmelite reform.
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
-
Saturday
January 1, 1611
- Ended on
-
Saturday
December 31, 1611
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
April 3
Sunday, April 3, 1611
- Decade
-
1610s
1610–1619
- Century
-
17th century
1601–1700
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
415
415 years before 2026.
In other calendars
- Hebrew
-
5371 / 5372 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1019 / 1020 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Metal zodiac:Pig
Sexagenary cycle position 48 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2154 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
989 / 990 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1603 / 1604 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1533 / 1532 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 9
- Digit product
- 6
- Digital root
- 9
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 1,161
- Flips to (rotate 180°)
- 1,191
- Recamán's sequence
- a(1,322) = 1,611
- Square (n²)
- 2,595,321
- Cube (n³)
- 4,181,062,131
- Divisor count
- 6
- σ(n) — sum of divisors
- 2,340
- φ(n) — Euler's totient
- 1,068
- Sum of prime factors
- 185
Primality
Prime factorization: 3 2 × 179
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand six hundred eleven
- Ordinal
- 1611th
- Roman numeral
- MDCXI
- Binary
- 11001001011
- Octal
- 3113
- Hexadecimal
- 0x64B
- Base64
- Bks=
- One's complement
- 63,924 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓏺
- Greek (Milesian)
- ͵αχιαʹ
- Mayan (base 20)
- 𝋤·𝋠·𝋫
- Chinese
- 一千六百一十一
- Chinese (financial)
- 壹仟陸佰壹拾壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,611 = 1
- e — Euler's number (e)
- Digit 1,611 = 0
- φ — Golden ratio (φ)
- Digit 1,611 = 2
- √2 — Pythagoras's (√2)
- Digit 1,611 = 3
- ln 2 — Natural log of 2
- Digit 1,611 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,611 = 1
Also seen as
UTF-8 encoding: D9 8B (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.75.
- Address
- 0.0.6.75
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.6.75
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1611 first appears in π at position 17,082 of the decimal expansion (the 17,082ordinal-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.