Properties of the Number -2621

Six Hundred Twenty-One

Basics

Value: -2622 → -2621 → -2620

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2621

Divisors: 1, 2621

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101000111101

Octal: -5075

Duodecimal: -1625

Hexadecimal: -a3d

Square: 6869641

Square Root: 51.19570294468082

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

Values of n such that L(15) and N(15) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227518

Primes of the form 2x² + 13y². A107132

Primes of the form 2·k² + 29. A7641

Triangle read by rows: row n is the first row of the matrix M[n]^n-1, where M[n] is the n X n tridiagonal matrix with main diagonal (2,4,4,...) and super- and subdiagonals (1,1,1,...). A124575

Members of A164368 which are not Ramanujan primes. A164288

Primes prime(k) such that all integers in [(prime(k-1)+1)/2,(prime(k)-1)/2] are composite, excluding those primes in A080359. A164294

Primes p=prime(k) of level (1,2), i.e., such that A118534(k) = prime(k-2). A117876

Primes congruent to 1 mod 20. A141881

Number of integer compositions of n whose leaders of anti-runs are strictly increasing. A374679

Lower prime of a difference of 12 between consecutive primes. A31930