Properties of the Number 80149

Eighty Thousand One Hundred Forty-Nine

Basics

Value: 80148 → 80149 → 80150

Parity: odd

Prime: Yes

Previous Prime: 80147

Next Prime: 80153

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 80149

Divisors: 1, 80149

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011100100010101

Octal: 234425

Duodecimal: 3A471

Hexadecimal: 13915

Square: 6423862201

Square Root: 283.10598722033416

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

Consider all ways of writing a number as p+2m² where p is 1 or a prime and m >= 0; sequence gives numbers that are expressible in at least 2 more ways than any smaller number. A16067

Primes p for which pⁱ + 4 is prime for i = 1, 3 and 5. A243780

Primes of the form 7n² + 6. A201607

Indices of primes in sequence defined by A(0) = 41, A(n) = 10·A(n-1) + 11 for n > 0. A101719

a(n) = ∑_{m=0..floor((n-1)/2)} prime((n-m)(n-m-1)/2+m+1). A249490

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 22. A31610

Numbers k such that (598·10^k - 31)/9 is prime. A281991

Numbers k such that k² + 1 and k² + 3 are both prime. A80149