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Properties of the Number -162143

One Hundred Sixty-Two Thousand One Hundred Forty-Three

Basics

Value: -162144 → -162143 → -162142

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 162143

Divisors: 1, 162143

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100111100101011111

Octal: -474537

Duodecimal: -799BB

Hexadecimal: -2795f

Square: 26290352449

Square Root: 402.6698399433461

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(0)=2; for n>=1, a(n) = smallest prime p such that there is a gap of exactly 2n between p and next prime, or -1 if no such prime exists. A230
prime(k) for those k where floor((2*(prime(k+1)-prime(k))*PrimePi(k) mod (8·k))/k) = m with m = 15. A109569
Records in A000230. A133429
a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 3, where m = 2·n - 3 - 2p+1 and p is the unique integer such that 2p < n - 1 <= 2p+1 with a(1) = a(2) = 1. A49940
Smallest prime p such that there is a gap of 6n between p and the next prime. A58193
Primes p such that (r-p)/log(p) > 5, where r is the next prime after p. A82890
Increasing peaks in the prime gap sequence A000230. A86977
Primes preceding the first-occurrence gaps in A014320. A335366
a(n) is the smallest n-isolated prime, or a(n)=0 if there are no n-isolated primes. A218275
Least prime such that between it and the next prime there are exactly n semiprimes. A228171