Properties of the Number 2981

Two Thousand Nine Hundred Eighty-One

Basics

Value: 2980 → 2981 → 2982

Parity: odd

Prime: No

Previous Prime: 2971

Next Prime: 2999

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 11 × 271

Divisors: 1, 11, 271, 2981

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 101110100101

Octal: 5645

Duodecimal: 1885

Hexadecimal: ba5

Square: 8886361

Square Root: 54.59853477887479

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(n) is the least k such that 4^k mod k = n. A119678

D-toothpick sequence of the second kind (see Comments lines for definition). A194270

Numbers that are the sum of 6 positive 6th powers. A3362

Fundamental discriminants of real quadratic number fields with class number 3. A94612

Number of relatively prime or monic partitions of n. A300486

T(n,k)=Number of nXk 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it, modulo 4. A239819

Nearest integer to eⁿ. A227

Divisors of 9999999999. A27895

Pseudoprimes to base 10. A5939

Powers of e rounded up. A1671