Number

1,315

1,315 is a composite number, odd, a calendar year.

Arithmetic Number Deficient Number Odious Number Pernicious Number Recamán's Sequence Semiprime Squarefree Year

Historical context — 1315 AD

Calendar year

Year 1315 (MCCCXV) was a common year starting on Wednesday of the Julian calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback Read the full article on Wikipedia →

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, 1315
Ended on: Tuesday
December 31, 1315
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 1310s
1310–1319
Century: 14th century
1301–1400
Millennium: 2nd millennium
1001–2000
Years ago: 711
711 years before 2026.

In other calendars

Hebrew: 5075 / 5076 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 714 / 715 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Wood zodiac:Rabbit
Sexagenary cycle position 52 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1858 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 693 / 694 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1307 / 1308 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1237 / 1236 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 4
Digit sum: 10
Digit product: 15
Digital root: 1
Palindrome: No
Bit width: 11 bits
Reversed: 5,131
Recamán's sequence: a(4,133) = 1,315
Square (n²): 1,729,225
Cube (n³): 2,273,930,875
Divisor count: 4
σ(n) — sum of divisors: 1,584
φ(n) — Euler's totient: 1,048
Sum of prime factors: 268

Primality

Prime factorization: 5 × 263

Nearest primes: 1,307 (−8) · 1,319 (+4)

Divisors & multiples

All divisors (4)

1 · 5 · 263 · 1315

Aliquot sum (sum of proper divisors): 269

Factor pairs (a × b = 1,315)

1 × 1315

5 × 263

First multiples

1,315 · 2,630 (double) · 3,945 · 5,260 · 6,575 · 7,890 · 9,205 · 10,520 · 11,835 · 13,150

Sums & aliquot sequence

As consecutive integers: 657 + 658 261 + 262 + 263 + 264 + 265 127 + 128 + … + 136

Aliquot sequence: 1,315 → 269 → 1 → 0 — terminates at zero

Representations

In words: one thousand three hundred fifteen
Ordinal: 1315th
Roman numeral: MCCCXV
Binary: 10100100011
Octal: 2443
Hexadecimal: 0x523
Base64: BSM=
One's complement: 64,220 (16-bit)

In other bases

ternary (3) 1210201

quaternary (4) 110203

quinary (5) 20230

senary (6) 10031

septenary (7) 3556

nonary (9) 1721

undecimal (11) a96

duodecimal (12) 917

tridecimal (13) 7a2

tetradecimal (14) 69d

pentadecimal (15) 5ca

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓆼𓍢𓍢𓍢𓎆𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵ατιεʹ
Mayan (base 20): 𝋣·𝋥·𝋯
Chinese: 一千三百一十五
Chinese (financial): 壹仟參佰壹拾伍

In other modern scripts

Eastern Arabic ١٣١٥ Devanagari १३१५ Bengali ১৩১৫ Tamil ௧௩௧௫ Thai ๑๓๑๕ Tibetan ༡༣༡༥ Khmer ១៣១៥ Lao ໑໓໑໕ Burmese ၁၃၁၅

Digit at this position in famous constants

π — Pi (π): Digit 1,315 = 9
e — Euler's number (e): Digit 1,315 = 8
φ — Golden ratio (φ): Digit 1,315 = 4
√2 — Pythagoras's (√2): Digit 1,315 = 4
ln 2 — Natural log of 2: Digit 1,315 = 7
γ — Euler-Mascheroni (γ): Digit 1,315 = 1

Also seen as

Unicode codepoint

Cyrillic Small Letter En With Middle Hook

U+0523

Lowercase letter (Ll)

UTF-8 encoding: D4 A3 (2 bytes).

Lookup U+0523 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000523

RGB(0, 5, 35)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.35.

Address: 0.0.5.35
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.5.35

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 1315 first appears in π at position 1,096 of the decimal expansion (the 1,096ordinal-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.

Look up 1315 on Pi Search ↗