2,920,121

131 × 22291

Starting at 2,920,121, the Collatz iteration reaches 1 after 89 steps. The first transition is 8760364; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 131 × 22291

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,942,544

Proper Divisor Sum 22,423

Digit Sum / Digital Root 17 (Root: 8)

Adjacent Primes #2920117 ← → #2920123

Radix Representation

Decimal	2920121
Binary	1011001000111010111001 (22 bits)
Octal	0o13107271
Hexadecimal	0x2C8EB9

Divisor Catalog (4)

1 131 22,291 2,920,121

Collatz Trajectory (89 steps to reach 1)

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

2,920,121 8,760,364 4,380,182 2,190,091 6,570,274 3,285,137 9,855,412 4,927,706 2,463,853 7,391,560 3,695,780 1,847,890 923,945 2,771,836 1,385,918 692,959 2,078,878 1,039,439 3,118,318 1,559,159 4,677,478 2,338,739 7,016,218 3,508,109 10,524,328 5,262,164 2,631,082 1,315,541 3,946,624 1,973,312 986,656 493,328 246,664 123,332 61,666 30,833 92,500 46,250 23,125 69,376 34,688 17,344 8,672 4,336 2,168 1,084 542 271 814 407 1,222 611 1,834 917 2,752 1,376 688 344 172 86

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