3 × 5 × 61 × 563

Prime Factor Structure

Factorization String 3 × 5 × 61 × 563

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 839,232

Proper Divisor Sum 324,087

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #515143 ← → #515149

1 3 5 15 61 183 305 563 915 1,689 2,815 8,445 34,343 103,029 171,715 515,145

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

515,145 1,545,436 772,718 386,359 1,159,078 579,539 1,738,618 869,309 2,607,928 1,303,964 651,982 325,991 977,974 488,987 1,466,962 733,481 2,200,444 1,100,222 550,111 1,650,334 825,167 2,475,502 1,237,751 3,713,254 1,856,627 5,569,882 2,784,941 8,354,824 4,177,412 2,088,706 1,044,353 3,133,060 1,566,530 783,265 2,349,796 1,174,898 587,449 1,762,348 881,174 440,587 1,321,762 660,881 1,982,644 991,322 495,661 1,486,984 743,492 371,746 185,873 557,620 278,810 139,405 418,216 209,108 104,554 52,277 156,832 78,416 39,208 19,604

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.