1,815,015

3 × 5 × 121001

1,815,015 factors as 3 × 5 × 121001. Its 8 positive divisors give a proper-divisor sum of 1,089,033, so this integer is deficient. The Collatz stopping time is 189 steps.

Prime Factor Structure

Factorization String 3 × 5 × 121001

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 2,904,048

Proper Divisor Sum 1,089,033

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #1815007 ← → #1815043

Radix Representation

Decimal	1815015
Binary	110111011000111100111 (21 bits)
Octal	0o6730747
Hexadecimal	0x1BB1E7

Divisor Catalog (8)

1 3 5 15 121,001 363,003 605,005 1,815,015

Collatz Trajectory (189 steps to reach 1)

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

1,815,015 5,445,046 2,722,523 8,167,570 4,083,785 12,251,356 6,125,678 3,062,839 9,188,518 4,594,259 13,782,778 6,891,389 20,674,168 10,337,084 5,168,542 2,584,271 7,752,814 3,876,407 11,629,222 5,814,611 17,443,834 8,721,917 26,165,752 13,082,876 6,541,438 3,270,719 9,812,158 4,906,079 14,718,238 7,359,119 22,077,358 11,038,679 33,116,038 16,558,019 49,674,058 24,837,029 74,511,088 37,255,544 18,627,772 9,313,886 4,656,943 13,970,830 6,985,415 20,956,246 10,478,123 31,434,370 15,717,185 47,151,556 23,575,778 11,787,889 35,363,668 17,681,834 8,840,917 26,522,752 13,261,376 6,630,688 3,315,344 1,657,672 828,836 414,418

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