2031 | |||||||||
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2031 is the number following 2030 and preceding 2032.
Properties[]
- Its factors are 1, 3, 677 and 2031, making it a composite number.[1][2][3] It is also a squarefree number.[4]
- 2031 is an odd number[5][6] .
- 2031 is an unhappy number.[7][8]
- 2031 is a centered pentagonal number.[9]
- 2031 is deficient.[10]
- Its prime factorization is 31 × 6771.
Approximations[]
Notation | Lower bound | Upper bound | |
---|---|---|---|
Up-arrow notation | 45 ↑ 2 | ||
Scientific notation | 2.031 x 103 | 2.032 x 103 | |
Slow-growing hierarchy | \(g_{\omega^{\omega}}(4)\) | \(g_{\omega^{\omega}}(5)\) | |
Copy notation | 20[2] | 21[2] | |
Chained arrow notation | 45 → 2 | ||
Bowers' Exploding Array Function/Bird's array notation | {45,2} | ||
Fast-growing hierarchy | f2(7) | f2(8) | |
Hardy hierarchy | Hω(1015) | Hω(1016) | |
Middle-growing hierarchy | m(ω,10) | m(ω,11) | |
Hyper-E notation | E3.3077 | ||
Hyper-E notation (non-10 base) | \(E[45]2\) | ||
Hyperfactorial array notation | 6! | 7! | |
X-Sequence Hyper-Exponential Notation | 45{1}2 | ||
Steinhaus-Moser Notation | 4[3] | 5[3] | |
PlantStar's Debut Notation | [1] | [2] | |
H* function | H(0.1) | H(0.2) | |
Bashicu matrix system with respect to version 4 | (0)[45] | (0)[46] | |
m(n) map | m(1)(4) | m(1)(5) | |
s(n) map | \(s(1)(\lambda x . x+1)(1014)\) | \(s(1)(\lambda x . x+1)(1015)\) |
Sources[]
- ↑ OEIS A002808 - Composite numbers
- ↑ Wolfram Alpha Is 2031 composite?
- ↑ Wolfram Alpha 2031's factors
- ↑ OEIS A005117 - Squarefree numbers
- ↑ OEIS A005408 - Odd numbers
- ↑ Wolfram Alpha Is 2031 odd?
- ↑ Wolfram Alpha Unhappy Numbers
- ↑ OEIS A031177 - Unhappy Numbers
- ↑ OEIS A005891 - Centered pentagonal numbers
- ↑ OEIS A005100 - Deficient numbers