Properties of the Number 70381

Seventy Thousand Three Hundred Eighty-One

Basics

Value: 70380 → 70381 → 70382

Parity: odd

Prime: Yes

Previous Prime: 70379

Next Prime: 70393

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 70381

Divisors: 1, 70381

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001001011101101

Octal: 211355

Duodecimal: 34891

Hexadecimal: 112ed

Square: 4953485161

Square Root: 265.2941763401526

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

a(n) is the index of the smallest triangular number containing exactly n 7's. A48362

Sum of all terms on the two principal diagonals of a 2n+1 X 2n+1 square spiral. A114254

The smallest prime q > p = prime(n) such that p*(q-p)+q, p*(q-p)-q, q*(q-p)+p and q*(q-p)-p are simultaneously prime, or 0 if no such q exists. A180481

Primes p such that 2·p⁴+-9 are also prime. A174365

Largest prime factor in A071576 starting from 4th position. A123248

Numbers k such that 63·10^k + 1 is prime. A271361

Primes p such that x²³ = 2 has no solution mod p. A40984

a(n) = 5ⁿ mod 33. A70381