1,661,798

2 × 830899

Starting at 1,661,798, the Collatz iteration reaches 1 after 238 steps. The first transition is 830899; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 830899

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,492,700

Proper Divisor Sum 830,902

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #1661789 ← → #1661813

Radix Representation

Decimal	1661798
Binary	110010101101101100110 (21 bits)
Octal	0o6255546
Hexadecimal	0x195B66

Divisor Catalog (4)

1 2 830,899 1,661,798

Collatz Trajectory (238 steps to reach 1)

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

1,661,798 830,899 2,492,698 1,246,349 3,739,048 1,869,524 934,762 467,381 1,402,144 701,072 350,536 175,268 87,634 43,817 131,452 65,726 32,863 98,590 49,295 147,886 73,943 221,830 110,915 332,746 166,373 499,120 249,560 124,780 62,390 31,195 93,586 46,793 140,380 70,190 35,095 105,286 52,643 157,930 78,965 236,896 118,448 59,224 29,612 14,806 7,403 22,210 11,105 33,316 16,658 8,329 24,988 12,494 6,247 18,742 9,371 28,114 14,057 42,172 21,086 10,543

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