The Number
2561
Two Thousand Five Hundred and Sixty-One
In Base 11 Undecimal Is
1a1911
The numbers with a 11 subscript use Base 11 Undecimal notation.
For more familiar numbers: See Two Thousand Five Hundred and Sixty-One in Base 10 Decimal
Nearby Numbers
Positive, nonzero integers within three units
Scientific Notation
Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.
2.561e3
Reciprocal
A number multiplied with its reciprocal is one.
0.000579822732534410311
The reciprocal of 2561 in Base 11 Undecimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 1a1911 is not a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Two thousand five hundred and sixty-one is a composite number with 4 total factors (including 1 and itself). See primes in Base 11 Undecimal
A Composite
Composites have more than just these two factors.
Two thousand five hundred and sixty-one is a composite number with 4 total factors (including 1 and itself).
Prime Factors
The number two thousand five hundred and sixty-one has the following 2 prime factors:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
12111
·
16a111
= 1a1911
Base Conversions
The number two thousand five hundred and sixty-one in 35 different bases