Properties of the Number 74443

Seventy-Four Thousand Four Hundred Forty-Three

Basics

Value: 74442 → 74443 → 74444

Parity: odd

Prime: No

Previous Prime: 74441

Next Prime: 74449

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 17 × 29 × 151

Divisors: 1, 17, 29, 151, 493, 2567, 4379, 74443

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010001011001011

Octal: 221313

Duodecimal: 370B7

Hexadecimal: 122cb

Square: 5541760249

Square Root: 272.84244537828056

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

Number of lattice paths from (0,0) to the line x+y=n that use the step set {(0,1),(1,0),(2,0),(3,0),...} and never pass below y=x. A89324

a(0) = 0, a(1) = 1; for n >= 2, a(n) = a(n-1) + a(n-2) - n if that number is positive and not already in the sequence, otherwise a(n) = a(n-1) + a(n-2) + n. A117823

First term in a sum partition of the even-indexed Fibonacci numbers. A132262

Define two triangular arrays by: B(0,0)=C(0,0)=1, B(0,r)=C(0,r)=0 for r>0, C(t,-1)=C(t,0); and for t,r >= 0, B(t+1,r)=C(t,r-1)+2C(t,r)-B(t,r), C(t+1,r)=B(t+1,r)+2B(t+1,r+1)-C(t,r). Sequence gives array B(t,r) read by rows. A177011

a(n) = n*(1+3·n+6·n²)/2. A115519

Number of 6-ary Lyndon words of length n with trace 3 and subtrace 3 over Z₆. A74443

Indices of primes in sequence defined by A(0) = 73, A(n) = 10·A(n-1) + 13 for n > 0. A101140

Numbers k such that 7·10^k + 4·R_k - 1 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A103058