141 (number)

141 (one hundred [and] forty-one) is the natural number following 140 and preceding 142.

In mathematics

141 is:

• a centered pentagonal number.
• the sum of the sums of the divisors of the first 13 positive integers.
• the second n to give a prime Cullen number (of the form n2ⁿ + 1).
• the first three digits after the decimal point in the base 10 representation of pi (3.141592...)
• an undulating number in base 10, with the previous being 131, and the next being 151.
• the sixth hendecagonal (11-gonal) number.
• a semiprime: a product of two prime numbers, namely 3 and 47. Since those prime factors are Gaussian primes, this means that 141 is a Blum integer.
• a Hilbert prime

References