149
149 is a prime, odd, a calendar year.
Historical context — 149 AD
Calendar year
Year 149 (CXLIX) was a common year starting on Tuesday of the Julian calendar.
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Historical context — 149 BC
Calendar year
Year 149 BC was a year of the pre-Julian Roman 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
-
Wednesday
January 1, 149
- Ended on
-
Wednesday
December 31, 149
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
140s
140–149
- Century
-
2nd century
101–200
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,877
1877 years before 2026.
In other calendars
- Hebrew
-
3909 / 3910 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Earth zodiac:Ox
Sexagenary cycle position 26 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
692 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
141 / 142 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
71 / 70 Saka
Indian national calendar; year starts in March.
Properties
Primality
149 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one hundred forty-nine
- Ordinal
- 149th
- Roman numeral
- CXLIX
- Binary
- 10010101
- Octal
- 225
- Hexadecimal
- 0x95
- Base64
- lQ==
- One's complement
- 106 (8-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ρμθʹ
- Mayan (base 20)
- 𝋧·𝋩
- Chinese
- 一百四十九
- Chinese (financial)
- 壹佰肆拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 149 = 1
- e — Euler's number (e)
- Digit 149 = 2
- φ — Golden ratio (φ)
- Digit 149 = 7
- √2 — Pythagoras's (√2)
- Digit 149 = 0
- ln 2 — Natural log of 2
- Digit 149 = 6
- γ — Euler-Mascheroni (γ)
- Digit 149 = 6
Also seen as
UTF-8 encoding: C2 95 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.149.
- Address
- 0.0.0.149
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.0.149
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.