Properties of the Number 761

Seven Hundred Sixty-One

Basics

Value: 760 → 761 → 762

Parity: odd

Prime: Yes

Previous Prime: 757

Next Prime: 769

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 761

Divisors: 1, 761

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011111001

Octal: 1371

Duodecimal: 535

Hexadecimal: 2f9

Square: 579121

Square Root: 27.586228448267445

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) = numerator of harmonic number H(n) = ∑_i=1..n 1/i. A1008

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

Centered square numbers: a(n) = 2·n*(n+1)+1. Sums of two consecutive squares. Also, consider all Pythagorean triples (X, Y, Z=Y+1) ordered by increasing Z; then sequence gives Z values. A1844

Primes of the form 2x² + 2xy + 17y². A139827

a(n) = ∑_{d divides n} q(d), where q(d) = A000009 = number of partitions of d into distinct parts. A47966

Emirps (primes whose reversal is a different prime). A6567

a(n) = ceiling(n²/2). A982

Number of ordered triples (w,x,y) with all terms in {-n,...,0,...,n} and w² + x·y = 0. A211422

Primes of form 8n+1, that is, primes congruent to 1 mod 8. A7519

Primes of the form 10·n+1. A30430