Properties of the Number -132857

One Hundred Thirty-Two Thousand Eight Hundred Fifty-Seven

Basics

Value: -132858 → -132857 → -132856

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 132857

Divisors: 1, 132857

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -100000011011111001

Octal: -403371

Duodecimal: -64A75

Hexadecimal: -206f9

Square: 17650982449

Square Root: 364.49554181087046

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

Smallest b > 1 such that the first n primes p (i.e., A000040(1)-A000040(n)) all satisfy b^p-1 == 1 (mod p²), i.e., smallest base b larger than 1 such that any member of the set of first n primes is a base-b Wieferich prime. A256236

Bases b where exactly nine primes p with p < b exist such that p is a base-b Wieferich prime. A325885

Smallest b such that the k consecutive primes starting with prime(n) are all base-b Wieferich primes, i.e., satisfy b^p-1 == 1 (mod p²). Square array A(n, k), read by antidiagonals downwards. A286816

A(n, k) is the k-th number b > 1 such that b^prime(n+i-1) == 1 (mod prime(n+i)²) for each i = 0..4, with k running over the positive integers; square array, read by antidiagonals, downwards. A319062

A(n, k) is the k-th number b > 1 such that b^prime(n+i-1) == 1 (mod prime(n+i)²) for each i = 0..5, with k running over the positive integers; square array, read by antidiagonals, downwards. A319063

a(n) is the smallest b > 1 such that prime(n), prime(n+1), prime(n+2), prime(n+3), prime(n+4) and prime(n+5) are all base-b Wieferich primes. A344830

Numbers b > 1 such that the smallest five primes, i.e., 2, 3, 5, 7 and 11 are base-b Wieferich primes. A339534

Numbers b > 1 such that the smallest six primes, i.e., 2, 3, 5, 7, 11 and 13 are base-b Wieferich primes. A339535

Triangle read by rows: T(n, k) = smallest base b > 1 such that p = prime(n) is the k-th base-b Wieferich prime for k = 1, 2, 3, ..., n. A258787

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 38. A31626