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a self number in base 10, since there is no integer that added to its own digits, adds up to 97. [3] the smallest odd prime that is not a cluster prime. [4] the highest two-digit number where the sum of its digits is a square. the number of primes <= 2 9. [5] The numbers 97, 907, 9007, 90007 and 900007 are all primes, and they are all happy primes.
Ω(n), the prime omega function, is the number of prime factors of n counted with multiplicity (so it is the sum of all prime factor multiplicities). A prime number has Ω( n ) = 1. The first: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37 (sequence A000040 in the OEIS ).
A prime number (or prime) is a ... write the prime factorization of n in base 10 and concatenate the factors; iterate until a prime is ... 17, 41, 73, 89, 97, 113 ...
For example, the first prime gap of length 8 is between the primes 89 and 97, [69] ... to quickly discover composite numbers with small factors, before using more ...
The special number field sieve can factorize numbers with more than one large factor. If a number has only one very large factor then other ... 97, 109, 317, 353, 701 ...
Plot of the number of divisors of integers from 1 to 1000. Highly composite numbers are in bold and superior highly composite numbers are starred. ... 97: 1, 97 2 98 ...
97 4: 7474: 1481: 1 Now 97 is a non-trivial factor of 8051. ... The algorithm is very fast for numbers with small factors, but slower in cases where all factors are ...
A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.