1000002 is the number following 1000001 and preceding 1000003[1].
Properties
- Its factors are 1, 2, 3, 6, 166667, 333334, 500001 and 1000002, making it a composite number.[2][3][4] It is also a squarefree number.[5]
- 1000002 is an even number[6][7] .
- 1000002 is an unhappy number.[8][9]
- 1000002 is abundant.[10]
- Its prime factorization is 21 × 31 × 1666671.
- 1000002 is a Harshad number, meaning it is divisible by the sum of its digits.[11]
Approximations
| Notation | Lower bound | Upper bound | |
|---|---|---|---|
| Up-arrow notation | 1000 ↑ 2 | ||
| Scientific notation | 1 x 106 | ||
| Slow-growing hierarchy | \(g_{\omega^{\omega}}(7)\) | \(g_{\omega^{\omega}}(8)\) | |
| Chained arrow notation | 1000 → 2 | ||
| Bowers' Exploding Array Function/Bird's array notation | {1000,2} | ||
| Hardy hierarchy | Hω(500001) | Hω(500001) | |
| Middle-growing hierarchy | m(ω,19) | ||
| Hyper-E notation | E6 | ||
| Hyper-E notation (non-10 base) | \(E[1000]2\) | ||
| X-Sequence Hyper-Exponential Notation | 1000{1}2 | ||
| PlantStar's Debut Notation | [3] | [4] | |
| H* function | H(1) | H(1.1) | |
| Bashicu matrix system with respect to version 4 | (0)[1000] | (0)[1001] | |
Sources
- ↑ Wolfram Alpha 1000002
- ↑ OEIS A002808 - Composite numbers
- ↑ Wolfram Alpha Is 1000002 composite?
- ↑ Wolfram Alpha 1000002's factors
- ↑ OEIS A005117 - Squarefree numbers
- ↑ OEIS A005843 - Even numbers
- ↑ Wolfram Alpha Is 1000002 even?
- ↑ Wolfram Alpha Unhappy Numbers
- ↑ OEIS A031177 - Unhappy Numbers
- ↑ OEIS A005101 - Abundant numbers
- ↑ OEIS A005349 - Harshad numbers