3 × 13 × 73 × 181

Prime Factor Structure

Factorization String 3 × 13 × 73 × 181

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 754,208

Proper Divisor Sum 238,901

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #515293 ← → #515311

1 3 13 39 73 181 219 543 949 2,353 2,847 7,059 13,213 39,639 171,769 515,307

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

515,307 1,545,922 772,961 2,318,884 1,159,442 579,721 1,739,164 869,582 434,791 1,304,374 652,187 1,956,562 978,281 2,934,844 1,467,422 733,711 2,201,134 1,100,567 3,301,702 1,650,851 4,952,554 2,476,277 7,428,832 3,714,416 1,857,208 928,604 464,302 232,151 696,454 348,227 1,044,682 522,341 1,567,024 783,512 391,756 195,878 97,939 293,818 146,909 440,728 220,364 110,182 55,091 165,274 82,637 247,912 123,956 61,978 30,989 92,968 46,484 23,242 11,621 34,864 17,432 8,716 4,358 2,179 6,538 3,269

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