1,787,123

13 × 23 × 43 × 139

1,787,123 factors as 13 × 23 × 43 × 139. Its 16 positive divisors give a proper-divisor sum of 282,637, so this integer is deficient. The Collatz stopping time is 96 steps.

Prime Factor Structure

Factorization String 13 × 23 × 43 × 139

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 2,069,760

Proper Divisor Sum 282,637

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #1787101 ← → #1787129

Radix Representation

Decimal	1787123
Binary	110110100010011110011 (21 bits)
Octal	0o6642363
Hexadecimal	0x1B44F3

Divisor Catalog (16)

1 13 23 43 139 299 559 989 1,807 3,197 5,977 12,857 41,561 77,701 137,471 1,787,123

Collatz Trajectory (96 steps to reach 1)

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

1,787,123 5,361,370 2,680,685 8,042,056 4,021,028 2,010,514 1,005,257 3,015,772 1,507,886 753,943 2,261,830 1,130,915 3,392,746 1,696,373 5,089,120 2,544,560 1,272,280 636,140 318,070 159,035 477,106 238,553 715,660 357,830 178,915 536,746 268,373 805,120 402,560 201,280 100,640 50,320 25,160 12,580 6,290 3,145 9,436 4,718 2,359 7,078 3,539 10,618 5,309 15,928 7,964 3,982 1,991 5,974 2,987 8,962 4,481 13,444 6,722 3,361 10,084 5,042 2,521 7,564 3,782 1,891

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