Properties of the Number 1019

One Thousand Nineteen

Basics

Value: 1018 → 1019 → 1020

Parity: odd

Prime: Yes

Previous Prime: 1013

Next Prime: 1021

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 1019

Divisors: 1, 1019

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1111111011

Octal: 1773

Duodecimal: 70B

Hexadecimal: 3fb

Square: 1038361

Square Root: 31.921779399024736

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Lesser of twin primes. A1359

Sophie Germain primes p: 2p+1 is also prime. A5384

Safe primes p: (p-1)/2 is also prime. A5385

Number of partitions p of n such that median(p) = mean(p). A240219

Primes of form 10·k + 9. A30433

Primes whose base-5 representation is also the base-9 representation of a prime. A235482

Primes > 1000 in which every substring of length 3 is also prime. A69489

Primes == 3 (mod 8). A7520

Primes that become another prime under the map 1 <-> 0 (acting on the digits: A222210), cf. A171013. A175791

Numbers n such that n, 2n+1, and 4n+3 all prime. A7700