The Number

1265

One Thousand Two Hundred and Sixty-Five

In Base 21 Unovigesimal Is

2i521

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

For more familiar numbers: See One Thousand Two Hundred and Sixty-Five in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

1262
2i221
One Thousand Two Hundred and Sixty-Two in Base 21 Unovigesimal
1263
2i321
One Thousand Two Hundred and Sixty-Three in Base 21 Unovigesimal
1264
2i421
One Thousand Two Hundred and Sixty-Four in Base 21 Unovigesimal
1266
2i621
One Thousand Two Hundred and Sixty-Six in Base 21 Unovigesimal
1267
2i721
One Thousand Two Hundred and Sixty-Seven in Base 21 Unovigesimal
1268
2i821
One Thousand Two Hundred and Sixty-Eight in Base 21 Unovigesimal

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

1.265e3

Reciprocal

A number multiplied with its reciprocal is one.

0.0076fb68bicgg9g21

The reciprocal of 1265 in Base 21 Unovigesimal.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 2i521 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

One thousand two hundred and sixty-five is a composite number with 8 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

One thousand two hundred and sixty-five is a composite number with 8 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number one thousand two hundred and sixty-five has the following 3 prime factors:

5
521
Five in Base 21 Unovigesimal
11
b21
Eleven in Base 21 Unovigesimal
23
1221
Twenty-Three in Base 21 Unovigesimal

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

5211 · b211 · 12211 = 2i521

Base Conversions

The number one thousand two hundred and sixty-five in 35 different bases