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- Thread starter Sheriff_John_Bunnell_ret
- Start date

35 is the 10th discrete semiprime (5×7

35 has two prime factors, (5 and 7) which also form its main factor pair (5 x 7) and comprise the second twin-prime distinct semiprime pair.

The aliquot sum of 35 is 13, within an aliquot sequence of only one composite number (35,13,1,0) to the Prime in the 13-aliquot tree. 35 is the second composite number with the aliquot sum 13; the first being the cube 27.

35 is the last member of the first triple cluster of semiprimes 33, 34, 35. The second such triple distinct semiprime cluster is 85, 86, and 87.[3]

35 is the number of ways that three things can be selected from a set of seven unique things, also known as the "combination of seven things taken three at a time".

35 is a centered cube number,[4] a centered tetrahedral number, a pentagonal number,[5] and a pentatope number.[6]

35 is a highly cototient number, since there are more solutions to the equation �−�(�)=35

There are 35 free hexominoes, the polyominoes made from six squares.

Since the greatest prime factor of 352+1=1226

35 is the highest number one can count to on one's fingers using senary.

35 is the number of quasigroups of order 4.

35 is the smallest composite number of the form 6�+5