FlickrFriday ThirtyFive
“35 is a discrete semiprime ( or biprime ) ( 5 × 7) ; the tenth, and the first with 5 as the lowest non-unitary factor. The aliquot sum of 35 is 13 this being the second composite number with such an aliquot sum; 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 discrete semiprime cluster is 85, 86, 87”
“ any questions “
FlickrFriday ThirtyFive
“35 is a discrete semiprime ( or biprime ) ( 5 × 7) ; the tenth, and the first with 5 as the lowest non-unitary factor. The aliquot sum of 35 is 13 this being the second composite number with such an aliquot sum; 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 discrete semiprime cluster is 85, 86, 87”
“ any questions “