13,129

19 × 691

Prime Factor Structure

Factorization String 19 × 691

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Total Divisors 4

Divisor Sum (σ) 13,840

Proper Divisor Sum 711

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #13127 ← → #13147

1 19 691 13,129

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

13,129 39,388 19,694 9,847 29,542 14,771 44,314 22,157 66,472 33,236 16,618 8,309 24,928 12,464 6,232 3,116 1,558 779 2,338 1,169 3,508 1,754 877 2,632 1,316 658 329 988 494 247 742 371 1,114 557 1,672 836 418 209 628 314 157 472 236 118 59 178 89 268 134 67 202 101 304 152 76 38 19 58 29 88

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