101 (number)

100 101 102
Cardinalone hundred [and] one
Ordinal101st
(one hundred [and] first)
Factorizationprime
Prime26th
Divisors1, 101
Greek numeralΡΑ´
Roman numeralCI, ci
Binary11001012
Ternary102023
Senary2456
Octal1458
Duodecimal8512
Hexadecimal6516

101 (one hundred [and] one) is the number following 100 and preceding 102.

It is variously pronounced "one hundred and one" / "a hundred and one", "one hundred one" / "a hundred one", and "one oh one". As an ordinal number, 101st (one hundred [and] first), rather than 101th, is the correct form.

101 is a prime number and the smallest integer above 100. It is also a palindromic number, and hence, a palindromic prime.