13 × 31 × 1291

Prime Factor Structure

Factorization String 13 × 31 × 1291

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 578,816

Proper Divisor Sum 58,543

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #520241 ← → #520279

1 13 31 403 1,291 16,783 40,021 520,273

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

520,273 1,560,820 780,410 390,205 1,170,616 585,308 292,654 146,327 438,982 219,491 658,474 329,237 987,712 493,856 246,928 123,464 61,732 30,866 15,433 46,300 23,150 11,575 34,726 17,363 52,090 26,045 78,136 39,068 19,534 9,767 29,302 14,651 43,954 21,977 65,932 32,966 16,483 49,450 24,725 74,176 37,088 18,544 9,272 4,636 2,318 1,159 3,478 1,739 5,218 2,609 7,828 3,914 1,957 5,872 2,936 1,468 734 367 1,102 551

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