2,121,190

2 × 5 × 43 × 4933

Starting at 2,121,190, the Collatz iteration reaches 1 after 104 steps. The first transition is 1060595; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 43 × 4933

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 3,907,728

Proper Divisor Sum 1,786,538

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #2121187 ← → #2121191

Radix Representation

Decimal	2121190
Binary	1000000101110111100110 (22 bits)
Octal	0o10056746
Hexadecimal	0x205DE6

Divisor Catalog (16)

1 2 5 10 43 86 215 430 4,933 9,866 24,665 49,330 212,119 424,238 1,060,595 2,121,190

Collatz Trajectory (104 steps to reach 1)

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

2,121,190 1,060,595 3,181,786 1,590,893 4,772,680 2,386,340 1,193,170 596,585 1,789,756 894,878 447,439 1,342,318 671,159 2,013,478 1,006,739 3,020,218 1,510,109 4,530,328 2,265,164 1,132,582 566,291 1,698,874 849,437 2,548,312 1,274,156 637,078 318,539 955,618 477,809 1,433,428 716,714 358,357 1,075,072 537,536 268,768 134,384 67,192 33,596 16,798 8,399 25,198 12,599 37,798 18,899 56,698 28,349 85,048 42,524 21,262 10,631 31,894 15,947 47,842 23,921 71,764 35,882 17,941 53,824 26,912 13,456

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