13 × 17 × 12721

Prime Factor Structure

Factorization String 13 × 17 × 12721

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 3,205,944

Proper Divisor Sum 394,603

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #2811337 ← → #2811343

1 13 17 221 12,721 165,373 216,257 2,811,341

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

2,811,341 8,434,024 4,217,012 2,108,506 1,054,253 3,162,760 1,581,380 790,690 395,345 1,186,036 593,018 296,509 889,528 444,764 222,382 111,191 333,574 166,787 500,362 250,181 750,544 375,272 187,636 93,818 46,909 140,728 70,364 35,182 17,591 52,774 26,387 79,162 39,581 118,744 59,372 29,686 14,843 44,530 22,265 66,796 33,398 16,699 50,098 25,049 75,148 37,574 18,787 56,362 28,181 84,544 42,272 21,136 10,568 5,284 2,642 1,321 3,964 1,982 991 2,974

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