In number theory, a Thabit number, Thâbit ibn Qurra number, or 321 number is an integer of the form 3 ⋅ 2 n − 1 {\displaystyle 3\cdot 2^{n}-1} for a non-negative...

Thābit ibn Qurra (full name: Abū al-Ḥasan Ṯābit ibn Qurra ibn Zahrūn al-Ḥarrānī al-Ṣābiʾ, Arabic: أبو الحسن ثابت بن قرة بن زهرون الحراني الصابئ, Latin:...

pentagonal number, nontotient, sum of twelve consecutive primes (41 + 43 + 47 + 53 + 59 + 61 + 67 + 71 + 73 + 79 + 83 + 89) 767 = 13 × 59, Thabit number (28...

triplet of distinct semiprimes 93, 94, and 95. an 11-gonal number. the first composite Thabit number. the lowest integer for which the Mertens function is...

31 + 37 + 41 + 43 + 47 + 53 + 59), Smith number. 383, prime number, safe prime, Woodall prime, Thabit number, Eisenstein prime with no imaginary part...

(2004)]. The Thābit ibn Qurrah theorem is a method for discovering amicable numbers invented in the 9th century by the Arab mathematician Thābit ibn Qurrah...

Thabit ibn Qays, companion of Muhammad Thabit ibn Qurra (c. 826 – 901), Baghdadi mathematician and astronomer Thabit number Tabit (town) (or Thabit)...

super-prime 3071 – Thabit number 3072 – 3-smooth number (210×3) 3075 – nonagonal number 3078 – 18th pentagonal pyramidal number 3080 – pronic number 3081 – triangular...

twin prime with 6133 6133 – 800th prime number, twin prime with 6131 6143 – Thabit number 6144 – 3-smooth number (211×3) 6173 – Sophie Germain prime 6174...

12285 = amicable number with 14595 12287 = Thabit number 12288 = 3-smooth number (212×3). 12289 = Proth prime, Pierpont prime 12310 = number of partitions...

prime 1534 = number of achiral integer partitions of 50 1535 = Thabit number 1536 = a common size of microplate, 3-smooth number (29×3), number of threshold...

Zāyd bin Thābit (Arabic: زيد بن ثابت, romanized: Zayd ibn Thābit) was the personal scribe of the Islamic prophet Muhammad, serving as the chief recorder...

A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that...

numerous places, including many Star Trek episodes. 47 is a safe prime, a Thabit prime, a regular prime, a cluster prime, an isolated prime, a Ramanujan...

every b ≥ 2, there are infinitely many Williams primes for base b. Thabit number Williams primes See Table 1 in the last page of the paper: Williams...

Ibn Thabit is an anonymous hip-hop musician from Libya known for his anti-government songs. Thabit has been living in Libya, where any form of dissent...

A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Accordingly it is a positive integer that has...

the number 1 differently than larger numbers, sometimes even not as a number at all. Euclid, for example, defined a unit first and then a number as a...

mathematics, a Mersenne prime is a prime number that is one less than a power of two. That is, it is a prime number of the form Mn = 2n − 1 for some integer...

In number theory, an n-smooth (or n-friable) number is an integer whose prime factors are all less than or equal to n. For example, a 7-smooth number is...

month, the number of pairs of rabbits is equal to the number of mature pairs (that is, the number of pairs in month n – 2) plus the number of pairs alive...

In number theory, a perfect number is a positive integer that is equal to the sum of its positive proper divisors, that is, divisors excluding the number...

triangular number or triangle number counts objects arranged in an equilateral triangle. Triangular numbers are a type of figurate number, other examples...

Khuzayma ibn Thabit Dhu al-Shahadatayn[citation needed] al-Ansari (Arabic: خزيمة بن ثابت ذو الشهادتين الأنصاري, romanized: Khuzayma ibn Thābit Dhū al-Shahādatayn...

highly composite number is a positive integer that has more divisors than all smaller positive integers. If d(n) denotes the number of divisors of a positive...

In mathematics, a double Mersenne number is a Mersenne number of the form M M p = 2 2 p − 1 − 1 {\displaystyle M_{M_{p}}=2^{2^{p}-1}-1} where p is prime...

In number theory, a happy number is a number which eventually reaches 1 when the number is replaced by the sum of the square of each digit. For instance...

In mathematics, a square number or perfect square is an integer that is the square of an integer; in other words, it is the product of some integer with...

In mathematics, a polygonal number is a number that counts dots arranged in the shape of a regular polygon: 2-3 . These are one type of 2-dimensional figurate...

In mathematics, a Fermat number, named after Pierre de Fermat (1607–1665), the first known to have studied them, is a positive integer of the form: F n...