1,298
1,298 is a composite number, even, a calendar year.
Historical context — 1298 AD
Calendar year
Year 1298 (MCCXCVIII) was a common year starting on Wednesday 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
-
Wednesday
January 1, 1298
- Ended on
-
Wednesday
December 31, 1298
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
1290s
1290–1299
- Century
-
13th century
1201–1300
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
728
728 years before 2026.
In other calendars
- Hebrew
-
5058 / 5059 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
697 / 698 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Dog
Sexagenary cycle position 35 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1841 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
676 / 677 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1290 / 1291 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1220 / 1219 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 20
- Digit product
- 144
- Digital root
- 2
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 8,921
- Recamán's sequence
- a(30,452) = 1,298
- Square (n²)
- 1,684,804
- Cube (n³)
- 2,186,875,592
- Divisor count
- 8
- σ(n) — sum of divisors
- 2,160
- φ(n) — Euler's totient
- 580
- Sum of prime factors
- 72
Primality
Prime factorization: 2 × 11 × 59
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand two hundred ninety-eight
- Ordinal
- 1298th
- Roman numeral
- MCCXCVIII
- Binary
- 10100010010
- Octal
- 2422
- Hexadecimal
- 0x512
- Base64
- BRI=
- One's complement
- 64,237 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ασϟηʹ
- Mayan (base 20)
- 𝋣·𝋤·𝋲
- Chinese
- 一千二百九十八
- Chinese (financial)
- 壹仟貳佰玖拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,298 = 4
- e — Euler's number (e)
- Digit 1,298 = 5
- φ — Golden ratio (φ)
- Digit 1,298 = 5
- √2 — Pythagoras's (√2)
- Digit 1,298 = 9
- ln 2 — Natural log of 2
- Digit 1,298 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,298 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1298, here are decompositions:
- 7 + 1291 = 1298
- 19 + 1279 = 1298
- 61 + 1237 = 1298
- 67 + 1231 = 1298
- 97 + 1201 = 1298
- 127 + 1171 = 1298
- 181 + 1117 = 1298
- 211 + 1087 = 1298
Showing the first eight; more decompositions exist.
UTF-8 encoding: D4 92 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.18.
- Address
- 0.0.5.18
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.5.18
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1298 first appears in π at position 499 of the decimal expansion (the 499ordinal-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.