19 × 821

Prime Factor Structure

Factorization String 19 × 821

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 16,440

Proper Divisor Sum 841

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #15583 ← → #15601

1 19 821 15,599

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

15,599 46,798 23,399 70,198 35,099 105,298 52,649 157,948 78,974 39,487 118,462 59,231 177,694 88,847 266,542 133,271 399,814 199,907 599,722 299,861 899,584 449,792 224,896 112,448 56,224 28,112 14,056 7,028 3,514 1,757 5,272 2,636 1,318 659 1,978 989 2,968 1,484 742 371 1,114 557 1,672 836 418 209 628 314 157 472 236 118 59 178 89 268 134 67 202 101

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