Properties of the Number -241001

Two Hundred Forty-One Thousand One

Basics

Value: -241002 → -241001 → -241000

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 401 × 601

Divisors: 1, 401, 601, 241001

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111010110101101001

Octal: -726551

Duodecimal: -B7575

Hexadecimal: -3ad69

Square: 58081482001

Square Root: 490.9185268453412

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

Semiprimes of the form n*(3·n-1)/2. A245365

Fermat pseudoprimes to base 2 that are pentagonal. A293623

Irregular table read by rows: n-th row lists the 9 n-gonal numbers of a 3 X 3 semimagic square with the smallest magic sum. The terms of each row are arranged in the manner shown in A261816. A265141

Semiprimes of the form (4·n + 1)*(6·n + 1) = 24·n² + 10·n + 1. A255584

Numbers k such that 2^k-1 == 1 (mod k) and p-1 does not divide k-1 for every prime p dividing k. A316907

Pentagonal numbers (A000326) that are also brilliant numbers (A078972). A113941

Numbers k > 1 such that 2^k == 2 (mod k) and gcd(k, 3^k - 3) = 1. A300762

Numbers k such that 2^k-1 == 1 (mod k) and lpf(k)-1 does not divide k-1. A316906

Brilliant Sarrus numbers. A86837

Pseudoquadprimes: p+4 for primes p where p+4 divides p^p+4 + 4 and p+4 is composite. A100875